Well that looks nice, I suppose you used a fake global light dome. hmm I'm not much of a Maya user, but to get the effect of having something appear lit, you could make lets say a red material,or shader, with self illumination set to 100%, and then apply it to the section of the mesh you want "lit". thats pretty simple.
Lasers could be a long thin cylinder with another material , or shader whatever you wan to call it , set to 100 % illumination, maybe 50% transparent and have a glow attached to it.
Well I havent gotten the chance to play with maya yet. but i think those concepts should translate pretty easily to that environment.
As for your valk, i think the lightning is a little bright maybe tone it down just a tad. and if you put a plane bellow the valk, it should give it a little more depth. because it will catch the shadows cast by the valk..
Hope I've been of some help. well i know the techniques that i gave you sound kind of low tech. But its better
than nothing i guess.