One of the most common mistakes amateurs make is improper alignment. Some think they should align their feet at the target, others try to get their shoulders parallel to it. Hey, some golfers try to align everything at the target! They're all wrong.
The correct way to align your shots is to always begin by first assessing your target from behind the ball. This will give you a perspective of the entire hole and help you aim right where you want the ball to go. Secondly, before you make your actual stance, set the clubface behind the golf ball and align it directly at the target. Do this before, not after, you get into your stance. PGA Tour players have a knack for aligning the clubhead in this fashion. Pay attention to how they do it the next time you tune in to the live coverage.