Wow, execution-wise, I think this is your strongest. The detail on her headgear is outstanding. I have little criticism for this except maybe that the background is a bit busy. It looks good though... but I would play a little more with the background.
Apart form that, I noticed that her hood's outlines are a bit weird... kinda pixelated but not in a bad-quality way, more in the way you cut the outlines. Amazing job!!
1st: The hardest part here are those background... ^^ I can't find the right background that will fit to its design. I think I should be more resourceful to that... 2nd is, the headgear: I'm glad you appreciate that, (most numerous layer)^^ haha.
3rd, Hood: it really look like pixelated because the pen-tooling on to that was so tiny.. more improvement i think...