I am putting a New York or Vegas cityscape wall mural on a wall and I want to generate it look concrete.? I want to put a light above it shinning down and possibly...

I want to put a light above it shinning down and possibly make it look similar to a window looking out. what concerned of light do I necessitate and is it possible to get twinkling lights to kind it look even more real? I be going for the evening look.
Answers:    The you might want to consider using fiber glass (like the ones on the shifting color light). Depending on how detail you want you could have a nice room.
THAT WOULD BE CUTE