For a straight golf shot, one must start with a straight or SQUARE club face: face pointing to the intended target. Often times golfers do not know what “square to the target” looks like. The vertical lines on the club face should be parallel to the intended target line.

To see this you can use the stripes on a range ball: aim the lines toward where you want the ball to go and place the club face so that the vertical lines are parallel to the stripes on the ball.