Conceptual Art

Im looking to create some concepts of a building (apartment building) from a cut away pov? Ive tried using scribble to some luck however its just not quiet right. I want a look and feel to a game called This War Of Mine in these concept images.

2 questions I’m hoping people might be able to assist with

  1. Is there a node I can use to refine an output?
  2. is there a better workflow I should be using?

Thanks

Forgot to mention im currently using

Controlnet, Scribble PiDiNet, KSampler