Cover art needs room for the title and author. Ask for a calm area at the top or bottom, avoid generating the title inside the image unless your tool handles text well, and set a portrait ratio.
Fantasy
a lone figure with a lantern on a cliff above a sea of clouds, towering ruins in the distance, painterly, dramatic light, empty sky at the top for a title, portrait --ar 2:3Thriller
a dark empty road at night in heavy fog, one pair of distant headlights, desaturated blue tones, cinematic, empty space at the top, portrait --ar 2:3Romance
two coffee cups on a café table by a rainy window, warm light, soft focus, gentle pastel palette, space for a title at the top --ar 2:3Non-fiction
a bold abstract shape composition in navy and yellow on a clean background, modern editorial style, large empty area for the title --ar 2:3Children
a friendly fox and a rabbit sharing an umbrella in the rain, soft watercolour, rounded shapes, bright colours, space at the top for a title --ar 2:3Related
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