The chin needs to be sticking out a lot more. Compare the side-view of your last picture containing models with the reference picture. I also think the mouth needs to be wider, and it shoud curve downwards.
Also, right above his eyes, he has this.. helmet thin. In the ref, it sticks out a bit, and it kinda obscures the view from the eyes. Again, compare your model with your ref.
Looks awesome except he doesnt look as hench as he should, imo you should make the face/head a lot smaller. After all if it was, everything else would look much bigger as proportions are mostly measured against the head size, maybe make the stomach a little thinner too, it makes the shoulders appear broader. apart from that its all sexy =]
I totally agree, the only thing holding it back is the size of the head making the rest of him look "puny" by comparison.
Also, maybe the "froggy leggies" (tm) could do with being bigger?
Love the model man, the Mad Axman proves once again, that I suck by comparision lol
Nothing better...except all the GF's that didn't die
Looking good man, I think the 'horns' on his helmet need to be bigger. Much bigger. If you look at the figurine their like half his height alone, whereas the ones on your model are really short by comparison. Everything else has either been said or just plain rules, good stuff as usual. Can't wait to see the sword :]