Suggestion: Omg that's so cool!! Maybe you could accordion fold it so you can see the picture by its self too.
Idea: I think the top and bottom of a skateboard would look so cool. Have like the sand papery top for one image, then maybe the design underneath the skateboard for the second image.
squash and strech because it is the most important, and therefore, most stress full to do, it is also the most usefull because it gives charicters and objects gravity, weight, mass and flexibility