I'm a relative newbie, but I've noticed that the slightest distraction will mess you up. I was shooting with my dad yesterday. Was shooting really well, especially since I usually shoot at 15 yards and was shooting at 20 because that's where he usually shoots his compound from. My wife walked over and asked my dad a questions while I was drawing to shoot. Draw felt good, release felt good, arrow missed entire target. The next two with nobody talking behind me were within 3 inches of aiming point.