it's a great model but i think your texturing could be a bit better. The shell looks a bit blurry even from this distance and the size of the patches on the legs seem to be a bit big. Do the legs have a bump map? they seem quite flat. you may want to consider a displacement map instead of a bump map.
Can we see a wire of the model aswell please?
Alan
Technical Director - Framestore
Currently working on: Your Highness
IMDB