Ernesto García Sánchez paints with brushes that are works of art unto themselves. One is a double-ended pole that he holds over his shoulder to color one canvas in front of him and one behind. Another is a rake-like contraption for creating three images in a row. A third looks more like a TV antenna, supported by García Sánchez on one end and a stand on the other, that can brighten up a dozen-foot stretch of exterior wall. The Cuban abstract artist’s goal: to make sure he’s never totally in control.