"Happy Clouds" Concept and Initial Design

I've been doodling a bit and come up with a new possible tee design. I had this fun idea of a cloud playing with air planes much like a child would with Matchbox cars. I thought it was cute and ran with it. Here are pics of the design, as well as a Threadless.com submission to their critique's forum:

Depending on the feedback I get from this I will either re-work it, submit it or scrap it. I feel good about this design though. I think it's cute.