Self-published authors pour months or years into a manuscript and often give the cover a fraction of that attention. The result is a predictable set of errors that appear on indie covers with enough regularity that experienced readers can identify them instantly. These mistakes are not signs of low creativity — they are signs of not knowing what to look for. This list covers the ten errors that most reliably mark a cover as amateur and explains the specific fix for each one.
Mistakes 1 Through 3: Fundamental Design Errors
1. Too many fonts. Using three, four, or five different fonts on a single cover is among the most immediately visible signs of amateur design. Every font added beyond two introduces a new visual system that the viewer's eye has to reconcile. The result is visual noise rather than hierarchy. The fix is firm: use a maximum of two fonts on any cover. One display font for the title, one utility font for the author name and any secondary text. This single constraint eliminates more design chaos than any other rule.
2. Low-contrast text on complex backgrounds. This mistake comes in two forms: gray text on a slightly different gray background, and any colored text placed directly over a busy photographic background without contrast management. Both produce covers where the title reads poorly or not at all at thumbnail size. The fix for the first form is to use strongly contrasting text — white or near-white on dark backgrounds, near-black on pale backgrounds. The fix for text over a photographic background is to add a text treatment: a semi-transparent overlay behind the text, a blurred background zone, a solid color band, or typography that sits over the clear sky or clean ground of the photograph rather than over complex mid-tones.
3. A genre mismatch between the cover and the book. A thriller cover designed in pastels and script fonts. A romance cover with stark sans-serif typography and a dark palette. A cozy mystery cover that looks like a horror novel. These mismatches repel the very readers who would most enjoy the book and attract readers whose expectations the book will not meet. The fix is research: look at the top 20 covers in your genre's bestseller list before designing. Understand the visual language your genre uses. Work within those conventions deliberately rather than ignoring them in favor of personal aesthetic preference.
Mistakes 4 Through 6: Image and Composition Problems
4. Unlicensed or improperly licensed imagery. Using an image found via Google Images, taken from Pinterest, or sourced from a free site without verifying the license is a legal and platform risk that has real consequences for published authors. Amazon and other retailers respond to DMCA complaints by taking books down, sometimes permanently removing the title from search while the complaint is investigated. The fix is to use only properly licensed images from reputable sources and to keep the license documentation for every image you use. This costs almost nothing when budgeted correctly.
5. A stock photograph that has appeared on many other covers. Widely downloaded free stock images appear on multiple books simultaneously in the same genre. Readers who spend significant time on Amazon recognize them. A cover that shares an image with three other books in your genre signals that no original thought went into the design. The fix is to check download counts before selecting any free stock image, and to choose either less popular images or images that you will treat (crop, color-grade, composite) enough to be unrecognizable as the source.
6. Poor cropping that cuts important figure elements awkwardly. Cropping a figure at the knees, cutting through a hand, or severing a head at the hairline are compositional errors that the viewer registers as wrong even without knowing why. The eye expects figures to be framed either with clear intentionality — a tight facial close-up, a full-length figure with room to breathe — or cropped at natural break points like the waist or shoulders. Random mid-limb cropping looks accidental. The fix is to zoom out until you can find a natural crop point, or to use the image in a way that doesn't require cropping the figure at all.
Mistakes 7 Through 8: Typography-Specific Errors
7. An author name that is the same size or larger than the title. This is a hierarchy problem with a psychological dimension: authors set their names at maximum size because it feels right to have their name prominently displayed. But from a reader's perspective, the title is the product identifier and the author name is a brand signal that becomes important only after they have some relationship with your work. A debut author whose name is as large as the title sends a confused visual message. The fix is to set the author name clearly subordinate to the title in both size and weight — roughly half the visual mass of the title is a useful starting point.
8. Default font choices from the design tool. Canva, Adobe Express, and other template tools have default fonts that appear on every design when users do not actively choose a different option. These defaults appear on thousands of books and are recognizable as platform defaults to anyone who has used the same tool. Using the default Canva font on a book cover is the typographic equivalent of using clip art — it signals that no deliberate choice was made. The fix is simple: always choose a font intentionally. Start with the fonts appropriate for your genre as a guide and select from those rather than accepting defaults.
Mistakes 9 and 10: Process and Technical Errors
9. Designing only at full size without testing at thumbnail. A cover that looks excellent at 1600 x 2560 may be completely illegible at 160 x 256 pixels — the size at which most readers will first encounter it in a browsing context. This is not a technical problem with the export; it is a design problem that only manifests at small sizes and must be caught during the design process, not after publication. The fix is to build thumbnail checking into your design workflow: every time you reach a state where the cover feels close to finished, export a thumbnail version and view it at 100 percent at display size. Only approve a cover that passes both the full-size and thumbnail tests.
10. Not looking at the cover on multiple screens before finalizing. Colors shift dramatically between screens. A dark thriller palette that looks moody and appropriate on a calibrated desktop monitor can look muddy and unreadable on an older laptop screen or washed out on a phone. A romance cover that reads as warm gold on one device may read as harsh yellow on another. The fix is to view your final cover on at least three different screen types before approving it: your primary design device, a phone, and ideally an older or less calibrated secondary monitor. If the cover holds up across all three, it is genuinely finished. If it looks clearly wrong on any of them, there is a color grading problem that needs correction.
A Final Note on Revision Timing
Most cover design mistakes are fixable, and KDP makes it relatively easy to update a cover after publication. If you publish with a flawed cover, you can upload a replacement and the new cover will appear in the store within 24 to 72 hours. This is not an argument for publishing carelessly — a bad cover during launch affects your initial visibility in ways that are hard to recover from. But it is a useful fact to know: the cover is not a permanent commitment, and improving it later is always an option if resources at launch time are limited.