[3] While still in college, Sims took a position as an art director at Columbia Records in Los Angeles, where he produced a series of album covers.
Among the album covers that he designed were: Sims has worked with filmmakers such as Steven Spielberg, Jon Kilik, George Lucas, John Singleton, and Spike Lee.
He has designed posters for The Color Purple (1985), Clockers (1995), Do the Right Thing (1989), Dreamgirls (2006), Girl 6 (1996), A Huey P. Newton Story (2001), Jungle Fever (1991), Malcolm X (1992), Summer of Sam (1999), Woman, Thou Art Loosed (2004), Bamboozled (2000), When the Levees Broke: A Requiem in Four Acts (2006), New Jack City (1991),[4] Black Dynamite (2009), Love and Basketball (2000), Mo' Better Blues (1990), The Secret Life of Bees (2009), Crooklyn (1994), Brooklyn's Finest (2009) and Black Panther (2018).
[3] Other works he worked on are Heaven Is A Playground (1991), The Show (1995), He Got Game (1998), The Original Kings Or Comedy (2000), Skins (2002), Lottery Ticket (2010), Kinyarwanda (2011), Mike Tyson: Undisputed Truth (2013), Dara Ju (2017), War Paint (2018), Maynard (2018), Thriller (2018), Pushout: The Criminalization of Black Girls in Schools (2019), Revival!
[6] In 2003, six of Sims work has been selected by the Academy of Motion Picture Arts and Science to be featured in the exhibition "Close Up in Black: African American Film Posters.