Often working in unusual venues, he uses many means: graphic media, installation, performance, publication, writing and more. R.L. has exhibited his art at sites including the Baltimore Museum of Art, the Contemporary Museum in Baltimore, the St. Louis Center of Contemporary Art, and the Kansas City Art Institute. He has also shown his work internationally, including as an invited participant at the 12th Print Triennial in Tallinn, Estonia and the 3rd IMPACT Print Conference in Capetown, South Africa. Tillman frequently displays his work in his hometown of Baltimore. R.L. is also a co-founder of PRINTERESTING.ORG, "the thinking person's favorite online resource for interesting printmaking miscellany." His writing about print media has been published in several journals, and he has curated or co-curated exhibitions in Baltimore, Philadelphia, St. Louis, New York City, and elsewhere. Tillman received an MFA in Printmaking in 2002 as a University of Iowa Arts Fellow, he graduated summa cum laude from The George Washington University with a BA in art and political science, and he has studied politics at Oxford University.