Again, if you want comment on your modeling, post a wireframe!

And I think you should introduce more about what you're doing? what do you want to achieve? what mood/style do you want to have? what's your character doing? Then only we can give comments based on those...

Anyways, from just the picture, it's a fairly good model, but I see lotsa hard creased seams, not so sure why you did that unless you explain more