Here is the process for the illustration of one of my favorites, "There was an Old Woman Who Lived in a Shoe."
First, I sketched my basic idea using pencil and paper. I then scanned my pencil drawing to my laptop, and began the painting process. When I paint digitally, I operate the same way I would with conventional paints: I begin with the background and work my way forward.
And finally, the finished product! Now just 199 nursery rhymes to go!