i sure hope that isnt your proper skin job... it looks like you've just traced over some of the DBZ screens with the pencil tool in paint. add to that the total crappyness of the quality of the folds and skin... no offence, redo it and follow some photoshop tutorials.
As for the model, Mad_AxMan pretty much pointed out everything i was thinking, most importantly are those unsightly shoulders, unless your mod involves no exessive movement of those arms, such as actually moving them from his waist, there going to look like total crappy mashed bags of crisps, its bad enough working with bare arms, its easy enough to sort out a deformable polyflow for that, just use esf's Goku as an example of how Gi shoulders should be done to an extent