‘Piper’ and the Development of Pixar’s Presto Sculpting Brush Along with a slew of VFX breakdown videos and images, ‘Piper’ supervising technical director Brett Levin details the tools and techniques employed on director Alan Barillaro’s Oscar-nominated CG short. By now, most of the world has already met Piper, the world’s most adorable Sanderling and the star of Pixar’s Annie Award-winning short