Thanks for the reply Jim. I am especially interested in your layout because my space is almost exactly the same as yours. I have a 10 x 11 room, which is my workshop, and I have managed to clear out almost 2 full walls giving me a 10 x 8 "L" shaped space. I am trying to cram in as much track as I can, and seeing what you have done with your triple level layout will help me achieve what I am looking for.
I do not remember reading about how you created your backdrop. Is it just one color blue? I've been reading about other peoples techniques of blending blue and white, but that scares me as I am not artistic when it comes to painting.