Since you Begged - I lkie the scheme generally, though I would suggest perhaps experimenting using (thinned down) black/brown ink washes over most of the minature to give it more of an aged look.
As in my other comments, I like the color sceme. Having seen this pic, I did'nt see that you used a red color, too. My personal opinion is this is too much, you have blue, a brownish mettalic and green. I would make the red parts light blue.
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