The facial expression of a character will sometimes be a secondary action. When the main idea of an action is being told in the movement of the body, the facial expression become subordinate to the main idea. If this expression is going to animate or change, the danger is not that the expression will dominate the scene, but that it will never be seen. The change must come before, or after, the move. A change in the middle of a major move will go unnoticed, and value intended will be lost. It must also be staged to be obvious, though secondary.