Yeah the face is a bit weird looking. Really I don't suggest using the burn or dodge tool on anything though. I mean yeah its helpful but just make a new layer and brush black or white and set them to the right properties, you get alot more control over how much darker or lighter something is then with the burn tool. plus since its on its own layer you can smudge it around so you can control where its darker or lighter. It works out alot better IMO.

The sig itself is nice I guess, but you have to much black in the background for my tastes at least, and the woman face kills it for me (yeah I know you said you couldn't get it right).

Its nice work but I wouldn't current or anything. The current one is much better.