Rival Mr. Spazzy challenged you to a battle!

[Chaoxys]

How about something like this


You'll have to fix the hand yourself though as that's as far as I can get it without messing it up completely.

I think it works better for the motion if the opposite hand holds the ball. That way it's like a baseball pitcher.

THat would probably work with the hand where it is now. How you have the body there looks like it's flipped backwards.

I think you should emphasize his grin more...being just plainly white could make it be mis-seen as just random highlights on his face.

With the only other color on hand being black and dark green, don't think there is much more I could do aside from just giving him a grin, although I honestly don't think it looks like a highlight.