Okay.
*thinks to self* Geez, no one understands how to use constructive criticism...
moving on..
A good first attempt. Of course, it's nothing like your average flash game platformer. But at least you have the idea grasped. And it's always good to start with something, rather than nothing at all, they always say practice makes perfect. Keep up your work and you'll be doing fine in no time. To quote Alexman159 on a couple things, you could try testing out some of the things he's listed, etc. Also, try to take a bit more time on the game (sorry if you did actually spend a substantial amount of time on it). I'm sure if you at least try to make a decent game, even if the levels turn out bad, you'll still get a better review from your viewers. And as I said before, practice DOES make perfect. Also, It helps to watch a few animation tutorials here and there, to learn how the basic mechanics of flash work and how to get all the 'bells and whistles.'
Overall, a good first attempt, had it not been a first attempt my review wouldn't have been as..."soft" for lack of a better word. Keep up the good work, and you'll be pumping out quality content in no time.
Cheers.