It's all in the hands.
Nothing else matters. Don't swing like it's baseball though. For righties....at the peak of your backswing, left palm is directly down and right palm is directly up. At peak of followthrough, right palm is directly down and left palm is directly up. Simply flip the palms a little sooner or later to fix your slice or hook. Plus the palm flip is your power. Feet, hips, arms, elbows, shoulders....none of that matters until you get to pro level.
Nothing else matters. Don't swing like it's baseball though. For righties....at the peak of your backswing, left palm is directly down and right palm is directly up. At peak of followthrough, right palm is directly down and left palm is directly up. Simply flip the palms a little sooner or later to fix your slice or hook. Plus the palm flip is your power. Feet, hips, arms, elbows, shoulders....none of that matters until you get to pro level.