 Early in their career they shared both writing and art duties in their work, as seen in the first several issues of "Girls", which they have described as a transition point in their collaborative process.Today, they both collaborate on plots, but Joshua primarily scripts the dialogue, and Jonathan does all the art.When illustrating their work, Jonathan Luna uses 14 x 17 Strathmore bristol board, which he cuts into 11 x 17 pieces on which to draw.