My "test sheets" are small works on paper, each a different size, usually under 8 x 8, and are all on Stonehenge Fawn paper. It is an ongoing series that I began in 2009. I always have one of these sheets with me in the studio, and keep one in my sketchbook as well. I use these to sample materials, see how different colors look next to each other, and also to embrace my compulsive nature and sometimes just make a random mark when the drawing I am working on is very controlled and not allowing for messiness. It's somewhat an obsessive action for me, and they become beautiful paintings in their own right.