Johnny Vitale (left) shows Vivian Summers, 9, (center) and Richie Walling, 15, (right) how to add dimension to their letters during the Overspray Graffiti Camp hosted by the Vitale Bros. on Sunday ...

Then come throw-ups, which depict the writer’s name in two-toned bubble letters that are meant to be easily recognizable. At the top of the pyramid are pieces. Short for masterpieces, these ...