@SFischer Love the concept, perspective, and color palette! I do agree with Heather though, I think choosing to tighten up some edges of characters either in the foreground or background would help.
Personally, I think tightening the background figures/ground/sky to be more crisp and leaving the foreground figures out of focus and blurry like they are now would really pull it all together and direct the eye to the kid on the dino. Right now I'm drawn to those kids silhouetted in the front row first, and the dinosaur read as a tree initially until I looked closer.