Hmm.. well i might actually need someone like you for my game to make maps. My 3D modellers only specialize in guns and animations, so I've been stuck using prefabs for maps so far. You probably have seen my game, but here it is if u haven't. (Im misterninjaboy btw)
I'd like to see you're work, if you could make a little demo map, put it into unity, and maybe even use some shaders, i'd like to see what you're capable of.
Here is my email: email@example.com
No rush by the way, take as much time you need for the demo if ur interested.