Sweet!
This looks pretty good.
What I'd like for you to do though, is to practice shading and texturing.
Some of the shades here are in the wrong place, and I think it's overall too bland, (aka needs more contrast)
as for the wood texture, I think it's too blurred, needs more crispyness.
Try coloring, texturing and shading some of the lineart in this thread: http://www.newgrounds.com/bbs/topic/1141484
Hope that helped, have a nice day!