Also, the hair is a bit lacking in highlighting, making it look oddly flat - since it takes up a big part of the mini, it should get a bit more attention. Also, the tabard is a bit bland. Both of these could be photography artifacts, though - but I think the hair needs work.
I think this model is being seriously underrated, and the reason is a very bad photo quality that doesn´t do the mini justice; anyway, I think this is a very clean and accurate paintjob, with what seems to be nice blending. a problem I see is that the NMM (while very clean and smooth) is lacking stronger highlights which wouild make it look more metallic - at least that´s what I suppose, as I´m far from even attempting NMM myself.