Great article on making pop up books from the Society of Children’s Book Writers and Illustrators in Los Angeles:
A POPUP STORYBOOK presents a unique set of challenges. As for any two-dimensional illustration, many different approaches may be taken. For this book, a way of working developed from spread to spread. The journey to a finished book was both scenic and intriguing. Wilson: To start, Sara Gillingham at Chronicle Books had spotted my portfolio at an SCBWI-L.A. Illustrator’s Day, letting me know she’d keep me in mind for future projects. She and Andrea Menotti, the book’s editor had been working with Ray in developing the story of The Castaway Pirates. They liked my illustration style for this book because of its strongly defined lines and flattened perspectives. My characters are modeled, but still outlined — for the use of die lines (the printer’s guides for cutting out pop up pieces) they felt this would come in handy.
"Designing a Book That Pops"
A personal account by Ray Marshall, author and paper engineer, and Wilson Swain, illustrator, of the creation of The Castaway Pirates: A Pop-Up Tale of Bad Luck, Sharp Teeth, and Stinky Toes.
Download the pdf from SCBWI L.A.