Looks like an all around clean job.
The pictures are a little fuzzy, but from what I can discern, it looks like if you added some highlighting and shading to the individual details(trim of armor, spiky bits etc etc) it would give the figure a lot of detail and depth.
I agree with Yakky on this one...if you do a chestnut wash over the yellows and gold, like 2 parts ink 5 parts water...it will give it some nice depth. I also suggest doing it over the yellow too, but water it down even more, maybe about 1 part ink and 5 parts water, just to add some depth. Other then that it looks awesome.
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