RE: follow through
WHile I like what mez is saying I think it should be done more like MdDave said. Concentrate on pushing your pin into the bullseye as long as you can FORGET THE ARROW, You will only effect it NEGATIVELY. One other tip is shoot the smallest bullseye possible. A 2" or less pc of paper on bare bale is perfect. Then try to push the pin through the target until it falls on its own.
First step is DON'T CHOKE THE BOW TO DEATH. Hold it loosely in your left hand and wear a wrist sling to mentally deal with the fear of dropping it. Then use the heel of your hand to push the bow forward 'til it falls off balance by itself. One way to learn this is by shooting with your eyes closed at about 5 yds. Get into your form, Draw, Sight, Close your eyes and sqeeeeeze off the shot and don't open your eyes until the bow is at your side. You will be amazed how well you will hit and the group you shoot. Go back to this exercise anytime you have trouble with this issue or Target Panic.
Hope this helps.....Dave in WV(dryridge)