Staged with her paints set up and ready to go to town, Missouri artist Sandra Pemberton climbs the scaffold and with a piece of soapstone starts etching out, freehand on the sheet metal siding, the contours for a patriotic American mural. The 36-year-old painter from Neosho prefers to work without the hindrance of a projector as she traverses the 20-foot-wide, 12-foot-high building side—visible from Highway 63 in Pomona, Howell County, as her patron intended. Pemberton explained the process of bringing her patriotic “Tribute Mural” to completion. It starts with an 8- by 10-inch concept painting. Then the prep work begins: scaffolding, ladders, paint tables, and most important of all, speakers for her music. “I often must step back away from the wall and look at the design as a whole, getting all of the proportions correct,” she told The Epoch Times of her freehand approach. Then she and her husband, …