not that great
It's really boring, the animations don't look that great in a lot of parts.
But, it looks as though you are a capable of a LOT better. So try again on another one. I don't think I would try to fix this one, it's just crap :\ This looks like it's some kind of series of things with this smiley guy, so just move on and make the next one more interactive and more entertaining.
Also, if you do edit this one, you should make it so some random gear doesn't fly in and hit anyone, it should be something like the gear above falls and knocks him in.