Getting into the retouching workflow
A book cover image is weirdly stressful in a good way. It has to look clean up close, but it also has to read fast when it is tiny on a phone screen. So I start by grabbing the brief and not trusting my first idea too much. I look for what the cover needs to say in one second. Then I check the raw photo or the artwork and ask, what is fighting the title, what looks cheap, what looks accidental.
I like working in a straight line from big problems to small ones. First I set up the file so nothing breaks later. Right size, safe area, bleed, and a rough spot for type even if the type is not final yet. Then I do the heavy fixes like exposure, color cast, and messy backgrounds. After that comes skin or texture cleanup if there is a person, or edge cleanup if it is an object cutout. Only then I sharpen and add grain because doing that early just makes every mistake louder.
The last part is print reality. CMYK can dull colors fast and blacks can turn muddy if you push them wrong. So I soft proof, tweak again, and export with boring settings that printers actually like. It feels less creative at that point but it saves you from getting a box of sad looking covers.
Quick ending
If the image reads clearly at thumbnail size and still holds up when you zoom in, you are basically there. The goal is not perfect skin or perfect anything. It is a cover that sells the story without distracting little errors.
How to Retouch Images for Book Covers: A Step-by-Step Workflow for Professional, Print-Ready Results