Free: Contests & Raffles.
The first thing I would do is work with someone (pro shop, coach, etc.) on your form. My guess is you have not developed proper form and shot sequence. Is your draw length correct? It may be too long and is causing you form issues. Are you punching the trigger, or do you get a surprise release? Are you maintaining proper follow through? A five inch group at 20 yards screams form issues.