First thing I noticed was that the legs appear very short and stumpy, and that they get smaller as you progress down. It's a bit hard to fix now, but it's something to take into account for future drawings.

Other than that though, it looks great... I feel it could be slightly more detailed, but I don't know what your finished pictures are like so that could be a void point...
The colours are well balanced (I feel like I'm talking about an avatar) and the head design is interesting.

I'd say stick with it for sure ;)