This is one example of a fore-edge painting from a four volume set of scientific books which are divided by season. Each has a landscape painting of the season hidden until you begin to read it and bend the pages to turn them.
Cleaning out my filing cabinet, I found this handout that I made for my mini-comics class. Hope it’s helpful! Remember, it ain’t only for comics. Self-publish short stories, collections of drawings or sketches, or blank for journals/sketchbooks, etc.