Darkspine sonic and bomb sonic battle sprites

[Kamon]

Erm... shading doesn't really seem to make a lot of sense on me for the lower half, the way you've done it at least. Needs to look rounder. And pillow shading is... how do I put this...

I googled pillow-shading, and this is the first image I came up with.

It gives the appearance that the light source is between the viewer and the object, which doesn't really appear to be an issue here. Just making sure you're informed on it.