Opening and closing the face of the club too much during the backswing and downswing will cause you to hit the ball with the toe of the club
When playing a bunker shot play the ball off your front heel and make sure that you hit only several inches behind the ball so that the bottom of your swing arc is directly under the ball
Create an imaginary line to the target when lining up your shot then aim with your eyes down that line in order to hit your target