This is something I did today. I don't know if it is finished yet. You tell me.
PLEASE say if the color of the arm is okay. I tried to make it a bit natural, a bit night-ish and a bit blended at the same time and due to my half color blindness I just can't see if it looks ok or totally fucked. It's the same with everything that has to do with skin and eye colors and stuff like that.
I shot the arm myself and made the nebula from scratch.
UPDATE!
I hope ImageShack isn't as slow for you as it is for me.