This Poche drawing shows site surface and textual obviously which is a rocky slope. And rendering indicates my understanding of solids and voids. Changing light conditions influenced by openings has been showed as well.
The house is designed as an open plan building. A very plenty of natural light can be received by the opening. Lots of windows, horizontal wide and vertical narrow, are set into the wall. It can be seen that the most area is very light in this porche drawing.
I did some research about how to draw rocky surface. The line weight and the dark & light area of the rock are two key points.