I've made Pichu from Pikachu on 3DS max. I export the verts to the model and import it back, it looks messed up. I repeat for the double patch. It still looks messy. How many patches would need to be initiated to perfect the edited model? Also, Pichu is roughly the same size as Pikachu, I have another method of making Pichu little.
I think you have to keep trying as much as possible. I guess to resize him make all his vertices scaled (smaller).