kids coloring book creation

My project is to create a fun and exciting coloring book that will captivate and entertain children ages 6-10. The theme of this coloring book would be a fantasy character, so the illustrations would need to be entertaining and unique. The coloring book should also be approachable for younger kids, so it should not be overly complicated or too detailed. I would like the book to have fewer than 20 pages so that the youngsters can work through the book at their own pace.