Patti and I ventured into central Mexico last week with buddies Mike and Debbie Paolini to check out the charms of San Miguel de Allende, a beautiful colonial city long known as a magnet for artists, artisans and kindred spirits. While there, Patti and I conducted an on-location sketching workshop called "Sketching the Energy of Places" at the invitation of Meagan Burns, owner of Art Leap Adventures, a very cool art and adventure-based tourism company. Participants included local artists and…