How do I start customizing a Kindle or ebook front cover?
Open the cover's customization page and begin with the Kindle trim. Edit the visible text and other settings, then click Remake Cover to create a rendered version.
The editor preview shows your choices, but the rendered version is the file used for downloads, history, mockups, banners, and later print-cover projects. Remake the cover whenever you need those areas to use your latest changes.