Goodbrush ( a.k.a Craig Mullins) is a renowned concept artist,well known for his digital work and amazing ability to suggest the inessential and while maintaining a high level of visual fidelity to the work.
What always brings my attention on his work has always been his attention to light and shadows, and how that always creates intense depth in space and often nods at the scale of the space and the relationship between objects. It also helps that he chooses to simplify the forms the further they go in space, which is also a great way to create and manage depth.
Sources:
http://www.goodbrush.com/x4oynmjkxr5fhgmi0xsh6a9ml2dhxl
drawing into space 