start off small, 10 yds. Time after time. Shoot 3-6 shots and quit. Make them your best shots. Go in for a while. Go back out 30 mins to an hour later and shooter another 3-6. Make those shots your best, focusing on your first shot the most. Focus on consistency, hand placement, posture, etc. Focus, Focus, Focus, and most importantly TAKE YOUR TIME. Build your confidence, then step back to 20 yds. When you become proficient, limit your shot distance on deer to 20 yds. Nothing over that. Get one under your belt then move on. Hope this helps.