http://library.thinkquest.org/27344/propertech.htm#III. Release and Follow Through
Releasing the arrow properly is the most important fundamental in shooting. To follow through simply means to hold the release position until the arrow is safely launched onto the target. The key elements of success are: (1) Relaxation (2) and concentration. Here is a example of a good follow through: (1) The fingers on the bowstring hand are relaxed, (2) head and eyes are turned toward the target following the flight of the arrow,(3) the bow arm is extended toward the target, and (4) the bow hand is gripping the bow with the help of a sling.
A bow sling is designed to help the archer during the release and follow through. There are four different types of bow slings available. Any one of the bow sling will help the archer keep the bow from falling to the ground after the release.