Basically kind how your perfect book cover must be in a line or two. Use our preset prompt as it really is, or enter your prompt. Simply how much change will a specialist design really make? We ran an experiment to determine. We A/B analyzed Meta and BookBub ads to https://amazonpublishingagency.wordpress.com/2025/06/05/how-can-you-start-self-publishing-a-book-with-a-good-agency/