All good advice already.
I have 3 points that I hit prior to each shot: jaw, nose and fingers of the hand that holds the bow. This creates a set point for possible areas of error and verifies that each shot is made with the same lock points. At 20 yards, I didn't notice much difference but when I moved to 50, it closed the gap tremendously.
If you are right handed, make sure you are following through your shot. Many shooters hit right because of the after shot. Also, torquing the bow is possible. Make sure your grip isn't too tight. Good luck and keep at it