TUCSON, Ariz.—The phrase “practice makes perfect” is famous in sports and the arts. Yet in the arts, practicing techniques is not the only thing that is going to make an artist stand out. The dancers of Shen Yun Performing Arts are recognized not for just their outstanding athleticism, but also for their excellent moral presentation. “I think they don’t just need the physical training, there has to be a spiritual training too that comes forth. It’s like a radiance, it’s like a light. So fluid and so beautiful, it can’t just come from practice. There has to be spiritual practice too,” said Kurt Miller, a retired lieutenant colonel. When the artists of New York-based Shen Yun are portraying a character, they not only do the movements of the choreography,  they also study the character as a whole and try to emulate him or her on stage. So when a dancer …