This is amazing. I wish I had your talent. As feedback, I would say the color scheme is nice on the eyes, the shading is well done, I would say watch your outlines because there are some parts that look like you didn't wan't too complete them. but maybe this is just your style, I am just trying to give you feedback to improve. Also the picture seems a little busy with so much detail. I like detail but it can be a lot to take in. I hoe this helps. Of not, just ignore it.
I've looked at this several times and am still finding more neat details in her wardrobe design. I can appreciate that you've given her realistic armor that actually covers her body. Echoing other commenters here, but the belt buckle is AMAZING.