TSL | Taiwan Sing Language Gleaning

Straighten and close all five fingers of one of your hands, face the palm downward, and place the arm horizontally in front of your body; Straighten and close all five fingers of the other hand, face the palm inward, stretch the arm, and place the elbow on the back of the first hand. Using the elbow as a fulcrum, erect your arm vertically, with fingers pointing upward.