Practice swinging with your front foot turned out almost to the target which will stop you from shifting your weight to your front foot on the backswing
Many players release incorrectly because they can not physically produce the internal rotation of the hip needed in the downswing and release, use this quick half minute stretch before playing to work on your hip flexibility and allow your body to make the proper swing
Learn how to read the contour of the green, the grain and the terrain around the green