That perfect practice makes the perfect shot. I remember shooting only at a blank bale for the majority of my practice at home. Only days before a big tournament would I shoot a target with scoring rings. This was just to make sure my body and mind were in sync. How you will do in competition is just execution of how comfortable you are with your personal form. Once you have found your repeatable form, dealing with the mental capability leads back to confidence in your practice and mainly your reliance on God to guide the arrow!
NASP® changed my life! Taught me so many things beyond just archery.