Last night we continued working on proportions with the aid of one and two-point linear perspective. Linear perspective creates the illusion of depth by establishing a consistent horizon line (a.k.a. eye-level) for all objects. The parallel, diagonal edges of these objects will appear to diminish as they recede and converge meeting at vanishing points located on the horizon line. These were "free-hand" drawings. The objective was not perfect perspective but to establish a consistent "eye-level" and to accurately render the blocks as they approach the horizon line (eye-level). Just to be clear, eye-level and horizon line are the same thing.