1) Technique.
Get yourself a Evolution release aid and develop a
recurve style biomechanically strong technique. Use a straight arm and a solid side of the jaw anchor point.
Squeeze the release. Do not punch or make the release fire. This is VERY VERY important.
2) Shoot lots
But shoot with meaning. I shoot in my hallway at 15m into a targetbutt with odd old arrows. I have them grouping above the face and carefully aim at the face. I always practise my aiming and squeezing of the release.
3) Strength build.
Develop a weight training regime, in particular the shoulders. If you can also run.
Add weight to your bow, even if it;s just for training.
4) Mental development.
When you can score rounds. ALWAYS SCORE when you are at the club. Develop a database of your scores and learn your average. (BTW your AVERAGE is NOT your Personal Best)
Do not be mad if you shoot average.
5) Shoot competitions
Shoot lots and often and do not be afraid to lose.