Meet San Francisco artist Sirron Norris, who discusses his public and commercial art projects. Learn more about Sirron, and follow along as he demonstrates drawing characters with different emotions and from different perspectives. See "Happy, Sad, Mad: Cartooning with Sirron Norris" and "Perspective Cartooning with Sirron Norris" on YouTube or KQED's EdSpace: education.kqed.org/edspace/?s=sirron+Norris, where you can also download an educator guide about his work.