2. Keep the tilt during the motion
Now that you have placed yourself in the correct setup position for the downhill bunkershot, its time to talk about what will need to happen during the swing. One very important element in the swing, is to keep the upper body tilt you established at setup. This mens keeping your weight a lot on the front foot, and trying to keep the lead shoulder (left shoulder for a right-handed player) low during the whole swing.
As you can see on the left pictures above, the weight is kept on the front foot, and the lead shoulder is keept down during the downswing. On the right pictures you will see what it looks like if the opposite is done. This is a disaster when hitting downhill bunker shots.