A bunker shot is the only shot in golf where we don't actually hit the golf ball. To improve your bunker play, use this practice drill.
Draw two parallel lines in the sand approximately 4 inches apart that are 3 to 4 feet long and run perpendicular to your target line. Align your body left of your target line, placing your lead foot even with the line closest to the target.
Next, open your clubface so it is aiming at the target. This increases the loft and allows the bounce of the club to work. Now make 3/4-length swings, having the club enter the sand at the back line and taking the sand out between the lines. The swings should follow your bodyline, not your target line. When you have become proficient at making the club enter and exit the sand between the lines, again redraw the lines and placing balls between them. Making the same swings, the golf balls should come out of the sand high and land softly on the putting green.