Good info from BG. I used to have a bad habit of peeking to the left to see where the arrow was going to hit. It will send them left for a RH shooter. I still do it once in a great while.

What worked for me was to convice myself that I was going to see the arrow hit the target through the peep site. I understand that this is not possible but it helps to keep me from peeking. Concentrate on watching the arrow through the peep.