What Lies Beneath the Surface of the Moon?

So this weeks Creature design contest for conceptart.org is:
Lives Beneath the Surface of the Moon!Here is the Contest breakdown:
"Thanks to DUMAN for the topic idea (though I reworded it slightly)... I think it's a timely topic, given some of the things NASA has been up to lately. I think it was last Friday, NASA essentially bombed the surface of the Moon with a probe called LCROSS. The point was to kick up a bunch of moondust with the hopes of finding water, ice crystals, below the surface. But what if the probe disturbed something far worse? Design a new creature that lives beneath the surface of the Moon only recently discovered by NASA's newest experiment.
"

My concept is:
What lies beneath the surface of the moon, what is on the mysterious "Dark Side" of the moon? A giant reptilian turtle alien who has been in hybernation for over a million years. After Nasa's bombing of the moon, he has now finally AWAKEN!

I'm going to try out a new technique this week. I'm going to do the whold drawing fully rendered in Black & White first (except the space background) and THEN go to color.

Here is an early sketch of the creature

Send all thoughts on the concept, thanks guys!