You gave him a nice "aura" specially with his gaze and the chosen colours.
From the kind of miniature I would assume it is a bones miniature... (kind of mould-lines rests and shapes of the mini) if not, I beg your pardon. I am sure you would get much better results on a better quality figurine. ;)
Skin, whites, and hair looks great. I think it is missing a bit more contrast on the NMM gold/silver though. Would rate it for a 6, but his face and skin alone deserves a bit more so I will vote for a 7.
Keep on painting please!