Ok, that was pretty nice man! I would say only 2 things tho, your moves need to flow together more (no stop and go :P)
And-this is sorta like me nitpicking-Don't use the default stick >_>
It's just... Bad xD

WoW! that was bouncy! :D

There are some nice things with this animation. You managed to have some nice varying spacing, and kept the movements relatively smooth. You obviously know what easing is, which is always a good start. However, there are some strange instances of over easing and poses, as well as a lack of flow. You'll probably just want to study some basic principals of stick animation, and I'm sure that you'll improve in no time. Here are some really good tutorials covering a wide range of basics for pivot:
Rez's Tut
Reap's Tut
Foley's Tut