In this opportunity, Golman Renders 3D, recommends you something very simple: to analyze and to study the real life.
Study good architectural photography, in order to achieve a good result, while creating renderings. This willl not only give you a source of infinite inspiration for 3D interpretations, but also it will help you recognize lighting in a brilliant composition. You will learn the point of interest and the rules involved. Truth is, the principal goal of an architectural visualization, is to be able to visualize a building before it is even constructed.
Architectural visualisers are definitely effective and great virtual architectural photographers... still, we have an extra task: to create buildings apart from photographing them!