Liberalis has posted some nice shots of "Mini models" & several other people have said that they'll shoot some too, so put one of your best shots here with a link to your thread.
If you can, post a shot of your set-up & give use any details that you can to help other guys out & we'll see what we can come up with.
Here are some links to help out:
FAQ - Studio Lighting
Michael Paul Smith models - great stuff!
He makes models & photographs them so they look as if they're real cars in real locations. No PS was used on the images.
Some shots near the end show the sets.
This is a model I made & shot on film years ago of a JPS F-1 car so, no shot of the set. I think I only used one light, so it shouldn't be too hard to figure out what I did.