For the couple of years I've been into archery I had trouble concentrating for a proper release; where I was anchoring, hand movement, and the string was hitting my nose sometimes; then by accident something happened which worked for me.
I heard or read somewhere? that you should be able to hold your bow, comfortably, at full draw for 10 seconds if you are not over bowed, and I also heard archers overlook warming up.
What started out as warm up session, stretching and holding at full draw for 10 seconds, turned into a bit of fun by doing a count down, like a rocket take off, release and firing on 0. I started counting down from 10, (the arrows almost missed the bag); Then I did some 3 2 1 0 releases, and it turned into a great practice session. I did some countdowns from 5 too.
I am not saying to use a count down for normal shooting, but it, by accident, turned into a great practice drill for me. Now, for the first time, I get a beautiful little pause at full draw where all the factors are in focus; anchor point, full draw, shoulder pinch release, smooth hand pull back, aim.
I probably won't have to do this funny little count down drill ever again, but I can thank it for increasing my confidence and my accuracy.
(Oh, another thing I just read, which helped, is how begiining car drivers aim the car but get over it as they become drivers, while archers seem to take a lot longer to get over the aiming thing.)
((Oh, in Bernie Pellerite's book a low elbow is one of his 46 form faults, because the arm muscles are used for aiming, instead of a high elbow which uses the back muscles; but then John Schulz looks like he uses a low elbow in his hitting em like Howard Hill video. go figure?))