Get Mark’s iPhone App itunes.apple.com Get Mark’s Android App market.android.com Like Mark Crossfield on Facebook www.facebook.com Follow Mark/4golfonline on twitter twitter.com www.4golfonline.com Backswing Shoulder Turn For Better Golf shots. Mark Crossfield helps more golfers improve their golf swings with this video golf lesson. Watch as Mark talks about shoulder turn and how to improve your backswing with a better shoulder turn. Get your backswing and downswing on plane for straighter golf shots with your driver and your irons. Hit more greens and fairways with Mark Crossfield’s simple and easy to follow golf instruction.