7. Not Following Through
This is shotgunning's golden rule: No matter what, always keep the muzzle of the gun moving even after you shoot, whether you break the target or not. If you miss, follow the target to the ground, and do the same for wild birds that get away. Swinging through the target forces you to keep the gun moving. Resist the urge to stop the gun when you pull the trigger. By following through, you eliminate the possibility that your misses are a result of lifting your head from the stock at the shot.