Visualizing the flagstick as a tall object can help you make more shots up to the hole
For downhill lies reposition your club and body so that your stance is parallel to the slope your ball is on
Many golfers can not get into a proper set up position and posture because their hamstrings are too tight to allow the straightening of the back, so before you tee off or practice work on stretching out your hamstrings so that you can work the golf swing properly around a straight back