One thing you could add is some cjhanges to the last frame. Try making him 'finish' his blow. it's called "moving hold"
Check this out: http://www.youtube.com/watch?v=LpgMqebug6Q
I know it's 3D animation, but it's the same motion principles, so just focus on motion, and ignore all the tech-stuff.
Check this out: http://www.youtube.com/watch?v=LpgMqebug6Q
I know it's 3D animation, but it's the same motion principles, so just focus on motion, and ignore all the tech-stuff.