Fieldmouse has hit the nail right on the head ,We all get the jitter's and don't take time to breath .I take a couple deep breaths when I see a deer coming in this will help you calm yourself down. This is the first step after that you'll forget everything about your shot .Also remember to bend at the waist and not your bowarm because this change's your anchor point and your almost gauranteed to miss in this situation.

nubo