Yeah if vegeta ever went ssj3 i think he would look more like gotenks then goku. so he shouldn't have the bang in front and if it is just gonna be that long its to short. and hair that long doesn't stick up that high. it would end up goin downwards then up.
i dont think the spikyness is too big a problem, but
I've learned taht ssj3 hair looks much better in 3d if
you dont let the individual hairs stick through the
others mesh it gives them a much cleaner look.
the hair is irrelevant, you didnt make the body and thats what people are getting tetchy about. one of the forum rules are that you have to acnowledge anyone else who has contributed (knowingly or unknowingly) to your model.