What text can I change on the front cover?
You can replace the editable title, subtitle, author name, and any other text layers supplied with the design. Each available layer can have its own wording, size, color, position, font, and visibility settings.
Keep the most important words concise enough to suit the original layout. After changing text, create a new render and check it at both full size and thumbnail size to make sure the title and author name remain easy to read.