His book, Landscape Painting: Essential Concepts and Techniques for Plein Air and Studio Practice, is a national bestseller with nearly 37,000 copies in print. Mitchell is also a popular workshop instructor at Gage Academy of Art in Seattle, Pacific Northwest Art School, Winslow Art Center, Daniel Smith Artist’s Materials, and Arte Umbria in Italy. He has lectured on Impressionism and landscape painting at the Seattle Art Museum and written for International Artist and Artists & Illustrators magazines. His popular painting blog, which serves as a companion to his book, was awarded #12 on feedspot.com’s Top 75 Painting Blogs.