This is really good. But if critiques is what you want, then critiques you shall receive. First is first: either choose another shade of skin color for the darkest skin color ramp, or scrap that dark red color all together and replace it with one of the pale brownish/purplish colors from her gloves /boot color ramp. I tried some and they worked great. Also, the guns are fine, however the bottom part of the gun you slide up and down to rid used cartridges, and ready the next shells, seems out of perspective( I know nothing of proper gun anatomy, so work with me here). You see, she's holding the handles slightly towards the viewer, however, the body of the gun seems to be sideways. Her fingers seem hard to read(basically HER left hand), and you may want to try and finishing the skin colored outline on her left leg, as well as the dark purplish hue on the back part of her "arse."
Don't let this be a drag though, as I like this. It's very clean, and great. My only hope is that you don't fade into obscurity and keep trying to produce great pixel pieces like this in the future...please...