hm.. I guess lief had the same intentions as I.
here is my edit:

I lengthened the lower legs because they seemed too short if related to actual anatomy of a person.
I also seperated the legs a couple pixels.
I seperated the shoulders from the body a couple pixels and made them a bit sharper or shoulder-like.
I edited the arms.. legs.. and more..
added a few highlights in places to make the 3 dimensional forms to pop out better because there were many spots which felt flat, but it could have been a style issue..
I also adjusted the shadeing to make it more realistic, or understandable.
If you study what i did and try and understand why i did it, you might learn some things which will help you improve further.
Overall it was a nice image, and I was compelled enough by it to work a bit on it and see what i myself can do to improve it. keep up the good work.