I grew up playing on a fairly hilly golf course, and later in life, I joined a club with an even more hilly course. As a result, I had to play many shots from uneven stances, i.e., uphill lies, downhill lies, ball above my feet, and ball below my feet.
Below are a couple videos that provide you with the correct approaches to playing these shots from uneven stances.
Oh, don’t mind the reference to my old website! 😉