How to Write a Design Brief for Your Book Cover

A book cover design brief is the document you hand a designer before work starts, and a good one carries two layers: the technical specs needed to build the file correctly (the finished size of the book, its page count, and the printing platform) and the creative context that shapes the picture (genre, target reader, comparable covers, and enough of the story to set the mood). A brief that loads one layer and starves the other is the common failure.

What Is a Book Cover Design Brief and Why Does It Matter?

A design brief is a structured document that tells your cover designer what the book is, who it is for, and what file the printer needs at the end. Without one, both sides are guessing, and guessing is what turns a two-round commission into a five-round one.

The Alliance of Independent Authors makes the same point on its Self-Publishing Advice Center, in a cover design guide that carries an eleven-point brief checklist adapted from one of its partner members: “If you are working with a designer, getting this information right from the start can avoid misunderstandings which in turn saves time, money, and energy on both sides.” Every element in the brief feeds one question: what should a reader instantly understand and feel when they see this cover at thumbnail size?

What Technical Specs Should You Include in Your Cover Brief?

Technical specifications are the foundation of any cover file, and missing ones lead to rejected uploads and reworked layouts. Put them at the top of the brief so the designer can set up the template before drawing anything.

Core specs every brief needs

Your designer needs three things before they can size a canvas: the trim size (the finished dimensions of the printed book, such as 5.5″ × 8.5″ or 6″ × 9″), the total page count or your best estimate, and the printing platform. Page count matters because it sets the spine width, and platform matters because bleed (the extra image area printed past the trim line and then cut away), barcode rules and template formats all differ between printers.

Both KDP and IngramSpark generate a cover template from those inputs, and sharing the template file with your designer removes the guesswork about spine width, barcode zones and safe areas. KDP’s cover calculator and template generator asks for binding type, cover type, interior type, paper type, reading direction, trim size and page count, then returns a labelled PDF and PNG you can use as a guide layer. IngramSpark’s generator sits behind a login and emails you InDesign, PDF and EPS templates, with a live barcode already placed on them. If you are publishing on more than one platform, say so at the start, because a file built to one template rarely drops cleanly into another.

Paper, binding and finish

Spine width depends on page count and on the paper the book is printed on, so the brief has to name the stock. KDP’s white paper produces a thinner spine than cream at the same page count, and IngramSpark’s stocks differ again. Tell your designer whether the interior is white, cream or groundwood (a lighter-weight, more textured stock offered for black-and-white interiors), whether the book is a paperback or a hardcover, and whether you want a matte or gloss finish, because matte mutes colour and a designer may adjust the palette for it.

Groundwood needs an explicit mention, because it is new and it is easy to get wrong. KDP added groundwood paper for black-and-white paperbacks after most cover guides were written, and its spine multiplier is page count × 0.00235″. No single KDP page lists every paper, which is how that figure gets missed: it has its own heading on the Paperback Submission Guidelines, while the Create a Paperback Cover page gives only white, cream, premium colour and standard colour. Work from the cover page alone and you will size the spine from the wrong number. Name the paper in the brief and the problem disappears.

Spine text

KDP will not print spine text below a page threshold, and IngramSpark sets its own. KDP’s cover guidance says a book “must have at least 79 pages to add spine text” and that spine text needs at least 0.0625″ (1.6 mm) of clearance on either side; if you use Cover Creator instead of supplying your own file, the same page puts the threshold at 80. IngramSpark’s File Creation Guide bans spine text on perfect-bound books under 48 pages, and sets spine type safety at 0.0625″ for spines 0.35″ and wider, dropping to 0.03125″ for narrower spines. (The two platforms round the same 0.0625″ differently in millimetres, so work in inches when you compare them.) If your book is anywhere near either threshold, tell the designer, because the answer changes what can go on the spine at all.

Ebook cover specs

An ebook cover is a separate file with separate rules, so include it in the brief rather than assuming the print cover can be cropped. KDP’s ebook cover criteria give ideal dimensions of 2,560 pixels high by 1,600 pixels wide, a height-to-width ratio of at least 1.6:1, TIFF or JPEG format, RGB colour, and a file under 50 MB. Note that KDP’s spec table for ebook covers says 72 dpi, not 300; the 300 figure belongs to print files, and quoting it on an ebook brief confuses the two jobs. Ebook covers must be in RGB colour because they are displayed on screens, and one file cannot serve print and screen well.

File deliverables to request

Specify what you expect back: a print-ready PDF, an ebook cover JPEG or TIFF, and the original layered source file (.psd for Photoshop, .ai for Illustrator). The layered file is the one authors forget, and it is the one that matters later. If your page count changes, or you add a subtitle, or you release a hardcover, the layered file makes that an edit rather than a fresh commission. Ask for it in the brief, before the fee is agreed, because some designers price the layered file separately and the figure is easier to negotiate before the work is done than after.

How Do the Platforms’ Cover Requirements Differ?

The differences between platforms are small in number but consequential in practice, and they are the reason a single cover file rarely satisfies two printers. Every print platform below wants a wraparound file, meaning the back cover, spine and front cover supplied as one image rather than three. The table below sets out what each platform publishes for the same book.

The bleed row is the one to read twice. KDP puts bleed on three edges and not the spine, while IngramSpark requires it on all four, so a file built for one is the wrong size for the other before anything is drawn.

KDP’s hardcover column is the other. It uses a wrap rather than a bleed: the image extends 0.51″ past the front cover edge so it can fold around the case board and glue to the inside, which is a different measurement doing a different job. KDP hardcovers are case laminate, meaning the printed cover is bonded straight onto the board with no separate jacket, and KDP’s Hardcover help page says plainly that dust jackets are not available. A brief that asks for a jacket is describing something KDP does not print.

The colour-space row is the one most often overstated. KDP recommends CMYK (“Images should be in CMYK color to ensure your cover looks good in print”) and warns against using multiple colour spaces in a single file, but it does not require CMYK and does not say RGB will be rejected. IngramSpark does require it for print covers, and requires RGB for ebook covers on the same page of the same guide. If your designer is producing files for both, that split is worth flagging in the brief.

How Much Creative Detail Should You Give Your Cover Designer?

Creative context is easy to get wrong in either direction, with too much detail or too little. The goal is to give enough for strong visual decisions without asking the designer to read the manuscript.

Your designer will not read your book

Unless you are commissioning bespoke illustration, a cover designer works from a summary rather than a manuscript. What they need is a one or two paragraph synopsis (spoiler-light is fine), the genre and subgenre stated precisely (“cozy mystery” tells a designer far more than “fiction”), three to five keywords that capture the mood (dark, whimsical, tense, warm, literary), and the setting or period if it is visually relevant. A cover is not an illustrated plot summary. It is a signal that tells the right reader “this book is for you” in under two seconds at thumbnail size.

What creative information actually helps

The most useful things you can supply are your target reader described as a specific person rather than a demographic range, the emotion you want the cover to produce, and examples of covers you admire with a reason attached. “I like Cover X because of the muted palette and the way the title dominates the image” gives a designer something to act on. “I like Cover X” does not.

If characters will appear on the cover, which is common in romance, fantasy and thriller, describe only the ones who will actually be shown. Skip secondary characters, plot mechanics and backstory. If the book has a strong visual motif, such as a lighthouse, a red door or a distinctive weapon, mention it as a suggestion rather than a requirement, and say which it is.

What creative information gets in the way

Full plot summaries, scene-by-scene descriptions and exhaustive character bios overwhelm a designer and produce worse covers, not better ones. Faced with too many elements to honour, a designer hedges by fitting several of them onto the cover, and a crowded cover fails at thumbnail size.

Vague instructions cause the same problem from the other end, because they leave the designer guessing, and every wrong guess is a revision round you pay for in time. If you genuinely have no visual preference, say so plainly and let the designer lead; that is a clearer instruction than enthusiasm without direction.

How Do You Find and Present Comp Titles for Your Cover Brief?

Comp titles, short for comparable titles, are covers from books that sit in the same part of the market as yours. They are among the most valuable things a brief can carry, because they show the designer what readers in your genre already respond to.

How to find good comps

Browse the top 20 bestsellers in your specific subcategory rather than a broad parent like “Fiction,” and look for the visual patterns they share: typography, palette, imagery type, composition. Those patterns are the genre signal readers use to recognise a book they might enjoy, and your cover needs to sit inside them while still being distinct.

Aim for three to six comps published in the last two to five years. Avoid universal bestsellers such as Harry Potter, which are too broad to be a useful reference point. Look for books that have found an audience in your subcategory rather than in publishing as a whole.

How to present comps effectively

For each comp, give a link to the book’s listing and a short note on what you like. Be specific: “I like the hand-lettered title treatment and the cool blue-green palette” is useful. Note what you dislike too, because it narrows the field just as fast: “I like the composition of Cover Y but the pink is wrong for my book’s tone.” Between them, those notes give the designer a visual vocabulary instead of a set of abstractions to interpret.

Comps guide direction, not duplication

A comp shows the visual neighbourhood your cover should live in. It is not a request to copy. Asking a designer to replicate a specific cover is both ethically dubious and potentially infringing, and any designer worth hiring will say so. Use comps to communicate the genre signal, not the execution.

Does a Fiction Brief Differ from a Nonfiction Brief?

Yes. A fiction brief and a nonfiction brief need the same technical specs, and both benefit from comp titles, but the creative emphasis shifts considerably between them.

Fiction briefs: mood and genre first

A fiction brief leans on genre convention, mood and emotional tone, because those are what a browsing reader is reading off the thumbnail. Romance readers expect particular cues: couples, warm palettes, script fonts. Thriller readers expect dark tones, bold sans-serif type and isolated figures. Fantasy readers expect ornate typography, rich colour and a hint of scale. Name the subgenre precisely; “romantic suspense with a small-town setting” gives a designer far more to work with than “fiction,” and the difference in specificity usually shows up in how close the first draft lands.

Nonfiction briefs: authority and clarity first

A nonfiction cover has to communicate what the reader will learn or gain, and typography carries most of that load. On many business and self-help titles the type treatment is the entire cover, so the title and subtitle have to be clear and correctly ranked at thumbnail size.

Nonfiction briefs therefore need more text planning up front: the exact title, the subtitle, any endorsement or foreword credit, and all back cover copy including testimonials and bullet-point takeaways, so the designer can plan the layout rather than retrofit it. White space matters more here than in fiction, and a clean layout with a single strong image survives thumbnail scaling better than several elements competing for the same space.

What Are the Most Common Design Brief Mistakes?

The same handful of brief-stage problems come up repeatedly in designer intake guidance and in cover files that arrive for repair. Each has a straightforward fix.

Being vague where specificity matters

“Make it look professional,” “make it pop” and “I want something eye-catching” give the designer nothing actionable. Describe the genre signal instead: “I want a reader browsing the cozy mystery category to recognise this as a cozy immediately, so warm palette, illustrated style, title readable at thumbnail size.”

Micromanaging the design

Dictating exact fonts, hex codes and compositions defeats the point of hiring a designer. Describe the outcome (“moody and atmospheric, sitting next to Comp X and Comp Y”) rather than the execution (“Garamond 24pt in #2C3E50”). The exception is series branding, where a font and a layout grid have to stay consistent across volumes, and there the constraint belongs in the brief explicitly.

Forgetting technical specs until the end

A designer who builds an ebook-only cover and then learns you also need a print wraparound has to rebuild the layout, not extend it. Name every format and every platform at the start.

Providing poor-quality reference images

If you are supplying photographs, such as an author headshot or a landscape, send the highest resolution you have. KDP sets 300 DPI at final output size as its minimum, and IngramSpark targets the same figure while publishing an actual floor: cover images under 200 DPI may be rejected. Supply 300 either way, because an image that looks sharp on a screen at a fraction of that will print soft.

Not providing the final text

The designer needs the exact title, subtitle and author name before starting, because the length of those strings drives the type layout. A title change after the design is finished can force the whole type treatment to be redone. Supply the final back cover blurb before the wraparound is built, too, because placeholder text produces spacing that falls apart when the real copy goes in.

Soliciting feedback from the wrong people

Friends and family are not your target market. If you want outside opinions on cover drafts, show them to readers of your genre, or test two versions with ads.

The point of writing it down

A brief is worth the hour it takes to write because it moves the decisions to the point where they are cheap. Changing a trim size on a document is a keystroke; changing it after a wraparound has been laid out is a rebuild. Get the specs, the genre and the comps onto one page, and the design conversation can be about the cover rather than about the file.

Frequently Asked Questions

How much does a custom book cover design cost?

We could not trace a published rate card for indie cover design, and the price tiers quoted around the web are not traceable to any survey. What is measured is what authors report spending. The Written Word Media 2025 Indie Author Survey, based on 1,346 self-reported responses, found that over half of authors earning up to $100 a month spend between $0 and $100 on a cover, mid-range earners typically invest $100 to $499, and most authors earning $5,000 a month or more spend at least $250 and often between $250 and $1,000. The survey’s own caveat is worth carrying: it found no clear correlation between spending $2,000 or more and higher income.

Should I give my cover designer the full manuscript?

No. Designers work from a concise brief. Provide a one to two paragraph synopsis, the genre and subgenre, the mood, and descriptions of any characters who will appear on the cover. The designer needs visual ingredients, not the story. Sending a 90,000-word manuscript signals that the cover’s job has not yet been decided, and a designer is unlikely to read it.

What if I have no visual ideas at all?

That is a workable position, and for some designers a preferable one. A brief that describes the target reader, the genre and the comparable titles gives a designer more to work with than one dictating specific visual elements. Say plainly that you have no strong preference and let the designer lead. Your job then is to supply the market context and to judge the drafts on whether they hit the right genre signal, not on whether they match a picture you had in mind.

How many revision rounds should I expect?

Designers normally state an included revision count in the quote, often two or three rounds, with additional rounds charged separately, so agree the number in writing before work starts. A clear brief tends to keep the remaining rounds small: font size, colour shift, text position. If you find yourself asking for a fundamental change of direction in round three, the brief is normally where the problem started.

Do I need separate files for KDP and IngramSpark?

In most cases yes. Both want a single wraparound file, but the measurements underneath differ: KDP puts bleed on the top, bottom and outside edges, while IngramSpark requires 0.125″ on all four sides, and their barcode rules and spine safety zones are not the same. IngramSpark also requires CMYK for cover images, where KDP only recommends it. Ask your designer for platform-specific files from the start rather than trying to make one file pass both.

What should the brief say about hardcover?

Say which hardcover you mean, because the options differ by printer. KDP prints case laminate only, with the cover bonded to the board, and its file uses a 0.51″ (15 mm) wrap rather than a bleed, with text and images kept 0.635″ (16 mm) from the edge and 0.4″ (10 mm) left clear at the spine hinge, the fold zone where the cover bends open. IngramSpark offers case laminate and jacketed hardcovers. KDP’s Hardcover help page says dust jackets are not available, so if your brief asks for one, name the platform in the same sentence.