@ Mostafa Saber: I'm glad that you like it. yes all of renders till now are for test and define my last try. The building is old and have many dirty textures so I try to show those. I think it's very important. I don't like clean renders because think have not good feel.
So I will have dirty maps and n theses last renders feel that become near to my interest dirty map. in final I will have those but with needed changes too.

Mohammad Saatchi

I like that artstic render with blue & yellow lighting. Nice model & details, do you mean to leave these splotches in your render? or it's just a test render?

Mostafa Saber