I kinda like it,
it's meant to be simple, not plain..
Don't make comments about negative space plz, unless you tell me how to make it better, other than just "Too much neg space"
Maby make more smudge efects with other colours (like red, white, yellow). It would make it more interesing.
I dont like that there is two gohans. Maby drop a picture on background like this on: http://sdb.drshnaps.com/images/BGs/DBZ/DB/BabaArena.gif