Roy Lichtenstein was an influential American pop artist known for his paintings that copied the style of comic strips and advertisements. His work changed the course of modern art by bringing popular culture imagery into fine art. Some key aspects of Lichtenstein's style included using dots or directional lines to represent tones, focusing on primary colors, and flattening forms with bold outlines. His large-scale paintings, such as "Whaam!" from 1963, had dots that blurred together from a distance to create tonal effects. Lichtenstein's work provided inspiration for mark-making techniques that the document's author wanted to experiment with in their own practice.