I don't think this model looks too good (the others looked quite alright). First of all Buu is much more PINK, though by the pic it looks like it's a kind of skin-gravel color. Also I think the tummy isn't right, it shouldn't be formed by to parts, only by one big and more rounded one (or make it seem less obvious about the two parts). Check this pic out:
Also, as you can see and WILL remember, Fat Buu (Good Buu, as I like to call him) is mostly smiling, I think you should make the first conversion of Buu smiling, and the others with a ;( face.
And the last thing is the "M" sign on his belt... that looks terrible, it looks slightly better on the "Evil Buu's" model.
*Hope I'm not a pain by sharing my ideas.