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
One of the most common faults in the swing is taking the club back outside, to fix this many players try to control the clubhead but in the swing it is actually the club handle that controls the clubhead so put a tee in your grip and measure your handle distance from your body through the swing
Do not approach your chipping stance like a full swing stance, keep your feet close together, slightly open, weight on your front leg and shoulders square to the target, this set up clears your hips prior to the shot and puts more of the toe of the club flat on the ground