I'm sort've a "B- Time Traveller" (Ben Stiller Show reference) when it comes to anatomy, but I'm hoping this is helpful:
1. The anatomy of the skull is really inaccurate. Also, the circular wound doesn't follow the contour of the head. The neck anatomy looks off. You have many places (neck, pecs, ribs) where you have a look of stretched flesh, but the 'wrinkles' are uniformly shaped and sized and are parallel. This looks artificial. The nose doesn't seem to come off the face correctly compared to the eye socket.
2. The interaction of the anatomy around the pectoral/collarbone/deltoid looks off. If those are ribs on his right, they are anatomically inaccurate. If they are not ribs, they look too much like ribs.
3. His wrist looks really beefy, and the taught tendons on the back of his hand look inaccurate.
4. Whatever this is is blurry and indistinct.
5. That just can't be what elbows look like.
Now, my understanding is that Michaelangelo's David has been sculpted with weird proportions so that it looks more accurate when viewed standing on the floor looking up at it. Crazy genius.
Odd proportions aside, look how different the balance is between the original and yours. Look at the angle of the shoulders and pectorals, and the way the torso changes angle.
Look at his jawline.
There are also lots of subtle things that are more difficult to articulate...muddy rendering, cutout-style edges in places, highlights on the edges flattening form, sloppy rendering of hair.
Again, I hope this helps.
Last edited by DPFX; October 18th, 2011 at 01:29 AM.
Reason: I like editing.
Will design for food, provided that we all agree that money is edible.