Correct hand position in archery is a vital part of your form. An incorrect grip can cause torque on the bow causing the arrow to fling left and right. Keep a 45 degree angle grip as well as a relaxed hand to limit your impact on the shot.
Archery, Arrows & Arrow Flight — There is a critical distance at about 5 to 8 metres (altri dicono metri). If the arrow hits fetching end "up", the nocking point needs to be lowered, and if it hits tail end down, the nocking point needs to be raised.