Odd thing for me about this figure is that the head sculpt doesn't bother me; it's the clothes. You'd figure that at this scale getting the right material would be easier than 1/6. One of the things I love about HT's T-800; the clothes look fantastic. On this one, for me, not so much.
Hmm. To me the only thing slightly wrong is the jacket looks a bit too thick and puffy - is that your main problem area?