mods! And nice ones, too. These are great.
If I can make some tech suggestions, it looks like the belly disappears when you look at it from the front. In order for it to look as 3d as the rest of the model, the normals on the belly probably need to be adjusted to match the new geometry. Also, WoW in general relies heavily on texture to "sell" the 3d, so for maximum effect a custom skin which is brighter on the top of the belly and darker and on the underside would probably look best. But yeah, it's a lot of work.
Maybe someone like Redaxle can help you with the normals if you aren't sure how to edit them (I don't know myself). Maybe I'll look into the skin, actually...