2nd what Paul said, and 3rd and 4th etc,
Nice work, Would it be possible to get a tut on both the 2nd image with the face in the helmet as well as the man with the cracks and the chains. Would love to see how you did them, Paul ask me same thing about a matte painting i did recently, but i wasn't really taking the painting that seriously, so a flat the image as i went along, Can't even remember some steps i took.
I am thinking of recording the screen as i do a matte painting so that i can look back at the steps i took, also to show others how i did it, but need don't have or can afford the software to do it or a microphone.
The other problem is It takes me a lot longer than most people to do things due my difficulties, Anyhow i will stop rambling on now,
Again relay nice work , hope you can assist us further, thank you.