“Design a vivid cover with playful illustrations of a contented couple within a park or café. Use cheerful shades like pink and yellow, with a whimsical font to the title and an easy a single with the creator’s name.” Good mock-ups and actually 1000s of packaging designs to select from. https://bookcoversforchildren.finance.blog/2025/06/05/how-can-you-start-self-publishing-a-book-with-a-good-agency/