1) Hierarchy: make the title win instantly
At thumbnail size, the title is usually the first thing a reader must recognize. Use size, contrast, spacing, and placement to make the title dominant. If the subtitle and author name compete with the title, you’re losing clarity.
2) Contrast: design for small screens and real print
Low contrast can look “subtle” on a calibrated display and then disappear in print. Prefer strong figure/ground separation. If you’re working with photography, add overlays or adjust values so type always reads cleanly.
3) Typography: choose fonts that survive printing
Thin strokes and delicate serifs can break down. If you’ve ever seen fuzzy or pixelated text, read Common KDP Cover Mistakes (and How to Fix Them) for fixes and safer export habits.
4) Genre signaling: use familiar patterns on purpose
Your cover should look like it belongs in its category. That includes trim size norms too—if you’re still deciding on format, check KDP Trim Sizes: How to Choose the Right Book Size and align your composition accordingly.
5) Print-proofing: design inside safe areas
Keep critical elements away from edges and folds. A cover can be “correct” and still feel cramped if type is too close to trim. Use a calm safe zone and validate the exact requirements before you export.