To be honest...
I didn't like it. I couldn't finish it. And I know people have said this already but the tweens dude. I mean tweens aren't bad. I use them with a combination of frame by frame. But you just way over do it. I mean you've been animating for a while now correct? It looks to me as if you haven't tried very hard to improve on actual animation. You need to experiment more and try to make it look better. Like I said tweens aren't bad but Dude when you don't even has an ounce of anything BUT tweening it makes the animation look bad...