Drawing needs work..but animation is a big 10!!
Normally, I don't like DBZ becuase of anime posers who think DBZ is the greatest while they haven't seen most of the other stuff.
This is an exeption. Granted, you can use more work on your drawing skills...but the animation in your work has been the closest I've seen to the anime. You've stayed true to the fighting style and cinemetography that DBZ uses.
I also suggest picking up the "How to draw anime" books. Please dont take this as an insult. I really want to see what you can do becuase your animation is top notch...and when you improve your drawing style,you'll probably be the authority on online anime this side of ink and cels.