You want your body to " explode" . You shouldnt have any tension on your arm muscles, it should be in your back. In other words, your grip should be relaxed. That doesnt mean hold your hand open, that means completely loosen your hand. When you begin pulling your shoulder blades together like you should, it should be subconsious. Your whole thought process is on aiming. The release goes off without you knowing when it will, and your still aiming through the spot your concentrating on long after the arrow hits. Everything is subconsious. Dont drop your arm, dont punch your trigger, dont anticipate. Everything will fall together without you knowing it.