1. Like Fred Bear said...."The hand does not leave the face."
2. If I think I'm having control problems and shooting before I'm ready, I found a trick that helps me......I deny myself the shot.
Try it sometime. Draw an arrow back, get the sight picture just right, concentrate. ....Hold ...Hold....Hold....Hold
Then slowly let up while maintaining the sight picture. Deny yourself the shot. You went through all that work to pull the bow back and didn't get the reward of watching the arrow fly.
Guess what...The world didn't end.
If you do this a few times you will gain control of your shot sequence. you will be able to release when you want to instead of triggering by motion and time alone.
It works!!