I have a great deal of difficulty getting the left side of my face to express emotion independent of the right side. Normally I mirror the right side with the left somewhat poorly. It feels less expressive when I pay attention to it. Keeping the right eye closed while paying attention to Nat's left side of face while watching him sing Unforgettable it did not feel as friendly as watching the left side of his face with both eyes. Almost like I was lost in where to look. It is not easy for me to keep the right eye closed throughout the song.