Leslie is an extraordinary artist whose artistic practice helps to preserve a rare artistic tradition and pass it on to others. She makes pieced-silk Buddhist thankgas, a Tibetan art form that dates back to the 15th century and is now practiced by a handful of Tibetan artists in exile in India. The images she creates are not painted but instead built up by sewing together pieces of silk like a cloth mosaic. The process is painstaking but also meditative.