Perspective drawing gives objects on a 2D surface a sense of three-dimensionality. There are two types of perspective: linear perspective and atmospheric perspective.
ONE-POINT PERSPECTIVE
One of the best illustrations of single-point perspective is to imagine that you’re looking at a straight road. All of the elements of the composition—particularly the road itself—will converge at a single point on the horizon line.
TWO-POINT PERSPECTIVE
Just as one-point perspective focuses on one vanishing point, two-point perspective ushers in a second one. Typically, these two points are at the opposite sides of the composition, such as one on the far left and another on the far right.