08 - The Release
The release comes from relaxing the muscles in the back of the hand, allowing the fingers to go limp and the string will push them out of the way.
If you are doing it correctly then the fingers of the string hand will still be in the hook shape after the shot as they were before the shot.
This can be practiced away from the bow, say at home while watching the TV.
With the thumb of the bow hand acting as the string, hook the three fingers of the string-hand around the thumb as if you were pulling back the string.
Relax the muscles of the string-hand and let the thumb push your fingers out of the way. Check that the fingers are still in their hook shape as if they were still holding onto the string.