shadow fix?

Hi I have make a wall for my project. so the problem is it dont looks realistic and no shadows its always a constant color how can i make this real and get shadows?

I think your problem may be in the environment. check to make sure there is a sun location in the environment so it knows where the light is coming from.

Otherwise in the NL2nco.editor and go to the advanced tab. There are some boxes you can check there like "receive no shadows", "cast no shadows".