As others have pointed out your grip looks alittle off , try ancoring the bow in the lifeline of your palm . One problem with your form that I see is that your shoulder on your bowarm is way to high , your shoulder should be down and locked in , the way you are drawing and anchoring your bow shoulder looks as if you would be quite sore after shooting , useing too many arm muscels to do what your back muscels should be doinng , hence the sky drawing tendency .