It's a very brave effort on a difficult subject. Drow skin is an absolute nightmare because (as far as we know ) there are no Drow to use for comparison. Personally I'd have gone for a purple/black basecoat and worked up the colours using a Sand colour added to lighten rather than Grey. The use of Pastel colours for the tunic is an interesting idea. I would suggest thatyou need to thin your paints a little more and use several thin coats instead, to get the coverage. :D