Looking good, Torq. Love the floor texture. Where'd you get that?

I agree with the comments about the repeating rock texture. RobA's tip for making it non-repeating is excellent. I'll have to try that out sometime. You might also try blending in a layer with Clouds or Difference Clouds to add a touch of random color to the otherwise monotone texture.

Are the handprints supposed to be actual handprints, or just painted designs? I ask because they seem to be out of scale if they're supposed to be life-size.

Looking forward to the finished version.