This is a collage type work using one point perspective. This was created by making a dot somewhere on the square, drawing lines to the edges from that point, and gluing strips down following those lines. Connecting these lines together this way causes you to focus on a single point, putting it into perspective, which is why it's called one point perspective. It can only be viewed from one place. It creates an illusion of the boxes getting smaller as it goes further in. The lines create shapes when they connect together following the perspective.