The perspective and pose in this picture are both just too damn good. You managed to throw a lot of personality into an image of a standing character, and that, to me, seems like an incredibly difficult thing to do. Most of the time, people have to rely on adding action to the mix in order to give the viewer an idea of what kind of individual is being represented. I feel like can get a good idea just from the way that this one is standing, looking, and playing with the tip of her sword.
I also love the way that you handled the coloring. You copied the reference picture PERFECTLY, and that's a HUGE positive for commission artists. A lot of people don't do that as well as you did. I'm sure that ~brazen-ram is incredibly pleased with this. It looks well, well worth the commission.