Lemme guess. That took you 5 minutes to make.
Beginner section. Put some time into your animations. It's choppy, stiff, and just overall looks like shit. Read some tuts, and just practice basic movemnets before you try to do a flying kick and shit like that.
Also, resize your anim so it's not so big, and don't use a backround. You can't see the onion skins that way.