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
Getting the right direction when putting requires that you have your head, your club, your eyes, your stroke and your intent all going in the same direction and that direction must be to the high point of the break
When the clubface rotates the heel becomes the leading edge of the club and makes contact first so practice making dollar bill divots to eliminate that clubface rotation