Looks like a solid unit there, a good paintjob. Should you wish to take it a step further, I'd say you need first of all to forget drybrushing when it comes down to highlites, the result looks quite nice en masse as here, but individually the result is not as good. Well, to sum it up, nice work, smoother blendings, even if longer to paint, would nonetheless give you better results. Oh, and forgot to add, nice metallics. :)