Everything has an effect. You have to train your mind. Shoot upclose. Your mind will make adjustments. You don't need to aim to throw a basketball. Your mind makes the adjustments for windage, elevation, speed, etc. Start up close and shoot, when you are hitting 2" square, over and over, move back 3 yards, continue moving back to where you feel comfortable, then change up your shots close, and far.

Hitting left or right could be your hold on the bow, your cant. head cant, etc.