Hey, thanks for the comments!
I can't believe I forgot to shade her hair! (Actually, it's easy to believe given the way I made the image.)
Yeah, the perspective got a little screwed up. I modeled the image in Poser first, which explains why you look down on the feet. The head was above the camera so you looked up at it, but I couldn't make it look right that way, so I straightened the face out.
The backpack was a late addition (I'm hoping to fix it later) and I think I can fix the shoulder straps pretty easily. She's holding the other shoulder strap, which I think I can also clear up.
As for the rapier and the bodice, I think I'm okay with those. Rapiers tend to be pretty long and thin, you actually have a longer reach than if you used a longsword--I think I will do another one in a combat stance, though.
I may post corrections to this one later tonight (much later) and I'll start on the combat stance around then, too. The big problem with line art like this is that it takes a long time to create.