Siimulate an uphill lie by placing your front foot on a step or bench. Lean your weight slightly towards your back foot and hold a club or hand weight as if you were going to hit a shot. Swing to the top and stop to make sure that your weight is loaded into your back leg. Feel the weight on the inside of the back foot and keep the back knee slightly flexed.
Simulate a downhill lie by placing your back foot on a step or bench so that most of your weight is on the front side like a downhill lie.