Adopt a “standing tall” position when you finish your swing at the follow through. This is in contrast to finishing low, with your elbows and hands below the level of your shoulders.
Adopt a specific position at the end of your swing, as you become stationary at the end of the follow through. Specifically, position your elbows up high and pointing towards the target, straight ahead. This is in contrast to seeing them point to the ground, or to the left or right of the target.
Adopt a position at the end of your follow through that sees your belt buckle facing directly towards the target. This is in contrast to finishing your swing where the belt buckle is seen facing down towards the ground or towards the right of the target.
Remember to perform a complete swing, i.e., one that also includes the last phase, the follow through. This is in contrast to golfers that view the impact as the last phase of the swing and more or less quit swinging past that point.