Children's Storybook Illustration.

Story is of a super cute little fly who disobeys her momma and on her way home from school gets trapped - in a book. She dreams great adventures and eventually returns home having learned some important lessons. Its warm and loving and maybe even a moving, loving, tear-jerker. Written in rhyming verse.
the illustration occurs in her dreamy mind, two distinct "looks" between reality and dream world would work.