that asks the reader to solve a non-linear string of "problems" ("If you're afraid of the dark ...") rather than follow a hero or heroine through a linear progression of plot points He has also collaborated with other artists on a number of children's books and in compilations of classic children's story illustrations.
He took a year off from school and spent much of his time with coloring books, graduating soon to channeling Monet and Van Gogh with crayons and cardboard.
The style found a large audience: over 1.3 million print copies of "...Night Rainbow" have been sold.
While other books (such as "The Starcleaner Reunion", "Caretakers of Wonder" and "If You're Still Afraid of the Dark Add One More Star to the Night") use the same "horizontal" approach, Cooper has also worked with other artists on numerous collaborations.
His partnership with Sandra Darling (Alexandra Day), author of the popular "Good Dog Carl" series, has produced seven books .