Outstanding work. The details are outstanding, the pose and expression are likewise well-done, and the colors are top notch. I have a few minor criticisms (which, to be fair, I didn't notice until I sat down to stare at this piece): first, the upper right arm 'seems' a little long, but only because it's thin. Proportionality is dead on. Second, the shadow across her face confuses me, as it does not extend down the rest of the body. I can only assume the revolver was meant to cause the shadow, which confuses me as to where the light is coming from. Lastly, the revolver cylinders don't seem quite right, but if done without a model (meaning, a revolver laying in front of you) it's probably hard to notice things like that. I also agree with sirres about the distance between ear and eye.
Nonetheless, this is fantastic work and easily earns 'favorite' status from me. Keep up the good work and I hope that you continue to be successful at creating excellent artwork.
Dont see where is says whether you desire C&C or not, but its only a little thing -- her ear seems like it is sitting a bit too close to her eye. Imagine if the hair wasnt there, ahh.. actually, following the line of the jaw, it looks good. Just odd next to the eye.
The first thing I saw when I took in all the details of this was how it reminded me of some of Masamune Shirow's works... although I much prefer your style than what he's capable of, especially in terms of understanding female anatomy. The pose, feel and overall expression is also very soft and convincing. Good work.