- the hands, especially the fingers
- the way the shirt is sculpted. maybe it was supposed to look like made from thick leathery stuff, but I am not sure
- the face. sorry, I don't like it at all..
- the general finish of the sculpt. now it looks like a half-unfinished concept dolly, not a final version. the shapes are blobby and not sharp enough. they lack smoothness and definition.
- arms seem to be strangely 'bent'
I may seem harsh but I nased my judgement on your previous works, which showed you have all the skills it takes to make a good sculpt. somehow this promising start didn't turn into a good finish in my humble opinion...
check this example of clean and neat sculpting out:
Click to see full-sized image
see - the surfaces are clean and smooth,
details are sharp and well defined.