This is an example of point. The infinity symbol creates arrows in the middle, creating a clear focal point.
This design shows how color and shape can be used to make 3 dimensional planes.
This illustrates how line can be used to create depth and scale.
In this design, dried vegetation is used to create a textured designed which also uses many lines to show depth.
This is one of my favorite designs, which illustrates scale. It compares some famous New York buildings and scales them much larger than the Statue of Liberty, and then features a larger scaled bench.