looks pretty LQ. that was my first impression.. second impression was its too dark to see much.. so its hard to do much more critique... depth is meh from what i can see.. your strongest part is probably lighting, which could still use some work.. try and match the reflections on her body/ground by putting light spots at teh top of the sig
I realized it was pretty dark, but couldn't do much to change it. The lighting suggest may help out a bit though. I think the depth is off because there isn't a lot in the picture to add depth to, so unless you have any suggestions to fix that, I'm at a loss on what to do. I'll fire up PS and try to get a better version out.