Wrong skin tone for a drow?
Overlooking that (and I guess it depends on what version of "drow" you're going for) the skintones, leather and cape are excellent. The metals not so much. Trying to put my finger on what it is about them that doesn't persuade me. I think it's that it's sort of halfway between natural and painterly. You've used natural metallics in a way that approaches NMM, but not firmly enough to capture that super-painterly finish, but too much that it can rely entirely on natural light to convey its properties. The gold/brass is much better - possibly because it looks like you've not tried so hard on it.
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