Recently, I made this drawing for practice of American artist Franz Kline. He was part of the Abstract Expressionist movement during the 40s and 50s. Along with Jackson Pollock he was considered an "action painter." The famous quote from him that I really like was "spontaneity is practiced".
This drawing is basically more of a portrait style sketch, I guess. I did it kind of quickly so the parts aren't accurate enough, but the main focus of this drawing was to practice using my gray markers. Comparing it to the original, the shadow areas in the face could be a bit darker.