Your fakemon look a bit plain IMO. I think they lack shading on tne border which would gve them a 3D perspective instead of 2D effect.
Also, a lot of them look pillowshaded which doesn't help the 3D effect and make it hard to clealy see where the light comes from.
I think your shark line fakemon are your best shaded one and your fire one is your worst because the angle you sprited them are hard to correctly shade. I think you should redo those fakemon but with a 30-60 deggre inststead of completly facing us or at 90 degree. I tbelieve them would look better and they would be easier to shade.