well done for gettin it all finished looks nice although i still think that there needs to be more tones of colour rather than just red and yellow. i no texturings not ur things so il leave it there 
looks really nice and well deserved portfolio piece.
i think for ur portfolio u should do some renders of the hi-res model without the texture to really show off ur modeling talents
I think the best part of creating a complicated work like this is that you are ready for anything 
Can you show us your UV layout?