This is the best likeness of Aragorn I've yet seen. Also, one of the best faces I've seen.
The trick is the eyes, which are painted, but in scale. Often painted eyes are too big for the head. In this case, it is perfect, showing the character's characteristic brow line, and strong cheekbones.
My only complaint is that the goatee is too dark. This is a common problem with all Aragorns, as it's hard to represent at this scale. At least you didn't give him a full beard (which is just wrong)