How Do Artists Create Illusions on Flat Surfaces?

Artists use tricks to make flat paper look like real life. Imagine drawing a room on a piece of paper, how do you know where the walls end and the floor begin? Artists draw lines that seem to go away, just like when you walk down a hallway and it looks smaller as you go further in. They call this linear perspective, and it’s one of the biggest secrets behind making flat surfaces look like 3D spaces.