the problem i see with some modellers/skinners here is that they rely too much on refrences and not use there own judgement, i am not saying using refs are bad, but i think you should add some uniqueness to it, gives it a little more style to it, i just use reference pictures to outline what I am going to do, then skin it the way i think would look good, having a certain uniqeness to your work IMO seperates the good models/skins from the average or OK ones, thats why people like Smo, Darksun, AZN are so famous around here because they each have their unique style to their work, what iam just trying to say that if there is anything you think to add that will make the model/skin look better, by all means do it, even if it does not match your reference picture