Nice use of negative space, and really cool shadows, Chris! From the thumbnail I though she was a nun - although I now see that's not the case, the impression carries through in several ways besides her clothing: her 'heavenward' gaze, the direction and quality of the light, the shadow at top-right that forms part of a cross... My only complaint would be that her face is a bit too dark and has lost all detail on the shadow side. Maybe you could brighten the face a little while leaving the rest as is?