Complex sentence: He wrote, directed, and acted in the 1995 independent film "The Four Corners of Nowhere", which got Chbosky his first agent, was accepted by the Sundance Film Festival, and became one of the first films shown on the Sundance Channel.
Split into simpler sentences: He wrote, directed, and acted in the 1995 independent film "The Four Corners of Nowhere", which gained Chbosky his first agent. It also was accepted by the Sundance Film Festival, and became one of the first films shown on the Sundance Channel.