The keys to success with a bunker shot are relaxation and the right set up.
Set up with an open stance – meaning your feet, hips, and shoulders are aimed more left of the target. Weight favors front side from start to finish.
Ball position is left of center {upper middle of your stance}.
Set your wrists early with zero tension. Make a generous backswing.
Accelerate through the sand ensuring that you catch sand first {that’s why they call it a sand shot}. The sand literally propels the ball out.