This is looking really good. I like the subdued shading. Also like the face design, and the posture is nice.
You seem to be doing ok on the folding department, some aren't too accurate (mainly jacket on the torso) but they work well.
Design wise, i suggest giving his (under)shirt one of them currently fashionable big-ass bold designs and color schemes, like a golden dragon on black shirt, or some purple abstract lettering/graphics over dark magenta shirt's fabric, or something of the sort.
Maybe also add some accessories, like necklaces, waist chains, etc. All within your fashion preferences of course
For the pants, you could take a look at current designs: designers are adding crazy things to pants, from slightly changing the cut to adding pockets with weird shapes, mixing different materials, adding rips, etc etc... Also, you could add some wear marks/highlights of a blue towards yellow/green tint, would look really nice
