This is getting really interesting. The way the weapon looks next to the hand is weird but I think I get the kind of idea your going for. Love the eyes and hair. Some things are still flat and sketchy but I understand this is just a sketch. I think my favorite part about this is the face tattoos. If I could recommend something. it would be to add some accent colors to different areas of the character clothes. Maybe some tribal symbols similar to whats on her face can be spread around to give her more story. I don't know how much more you'll push this but these are just my thoughts. Great work so far. Look forward to more. 
Looking at these latest wips of yours makes me realize I need to hurry up and put out some work on my sketchbook/blog.
