4 Lock and Key

Theme 4 of Variation 3 for the 100 Themes Challenge.

FINALLY. I decided that rather than keep trying to draw a decent skull and making it so that the jaw opens to reveal the jewel, it would be easier to just make it so that the skull opens around the forehead instead. >.> So, the lock & key thing is supposed to be that the skull is the box, holding the gem inside as the treasure, and the nose is the keyhole. There is a key in there, but it is difficult to see because I was so frustrated with this that I didn't care by this point. I could have gone for the more traditional route for this theme, but I'm trying to steer clear of things that are commonly used for this challenge. It is not only a challenge on my drawing abilities, but my creativity as well.