Tilt Your Body
When you setup to it, make sure your hips, knees and shoulders are on the lay of the land. Tilt your body so that it matches the downhill lie.
Forward Ball Position
Your ball position is forward because your body is tilted, and the club will bottom out more toward the front than normal.
Low through Impact
As you set into it, lower you hands. From here, you hinge the club up and slide it underneath. Accelerate and stay low through impact.