What about using an image map to shape the lights a bit? I think your scene is awesome, btw! But maybe it's a little too detailed? Like there's so much on the screen to look at, yet no where to focus...

Ooooh Cool, I like it. I think I'm going to start a new concept tomorrow too. I like that alot, can't wait to see a render!

I really liked your cast-shadow idea! I think maybe instead of out the window like it was previously suggested, it'd be even better being cast on the intended victim/target of your evil creature....