Here are my thoughts:
- The game was really simple. I beat it under 3 minutes. Simplicity is good in the beginning, but you should try to make games that are easy to learn (like this), but hard to master. Maybe add a couple of levels that have some seriously difficult jumps.
- Sometimes the character seemed to fly around with a lot more speed than it should.
- It does not fit the theme very well.
- The blue ball and rectangle are nice. Maybe add some teleporters, grapplers, magnets, ...
Nice little game. Especially for a 13 year old. Good job.