Wonder: Chalk Book Cover (examples and progress)

 Here are some examples of existing chalk-style covers. These are cleaner than my intended chalkboard design, aiming to appeal to children in their own style of doodle and mess.
Below are some rough draft cover ideas using chalk on black paper. I am currently working on composition to bring the cover together, so that it remains chalk and childish, but it needs to stay readbale and clear to the viewer on the book shelf.
Much of the feedback i recieve focuses on the text, how it gets lost among the doodles.
Some have questioned the messiness, much of it is thumbnail and mock-up related, but also because it is intended. In short, they asked [where's the skill in the scribbles?]. The answer is in the composition, and actually in the execution - its surprisingly challenging to emulate a child's doodle when i am stuck in adult form!
Children use basic shapes, draw straight out of thin air, proportion goes out the window and they use every means possible to get something out of their head and onto paper.

 The astronaut gained some likes in this one