Thanks for the critics guys, its really nice to receive feedback from people thats seeing this for the first time. Its hard to see those details when you're working in a project for a long time.
Hey Natland, here's the concept:
And yes, I agree with you and ysalex about the face, and although I resized it a little, its long but shorter than the concept.
Thanks garriola83, for sure I'll think twice when making specmaps for plates like those, instead of darkening the parts where the plates meet I'll reinforce the highlights.
Thanks for the facial tips ysalex, they all make sense, and about the legs proportions, I tried to match the concept.
heres the front view: