This is a bit unusual for me, posting the same drawing twice. But this is an improved version, and I'm leaving the original alone so you can see the difference. A great deal of shading changes, deepening the shadows to make a big more depth that wasn't in the original. Hopefully it shows.

All additional shadows added with a 01 Micron.

Original is here:
http://www.furaffinity.net/view/599534/