Okay, so less like a noble Huna, and more like a death trooper helmet then.
I'd say perhaps put something outside the eyes, to make it look more like a helmet; a 1*2 technical half-beam on both sides would probably work.
(Click to see the whole image)
You might also consider using gunmetal or black for the exo-force arms so they stand out from the torso more (I would say light grey, but I don't think they come in that colour). The silver only being on that part of the mask makes it look more like part of his torso/neck, and harder to see what you're going for.