To put your golf club in position for a powerful, repeatable downswing, you need link your arm swing and body turn on the backswing. Swinging the club too far around your body or picking it up too steeply forces you to compensate somehow on the downswing to get on a path for solid...
Secret Golf - Player Channel - Colt Knost - Backswing: Chest, Arms and Clubhead: Colt Knost explains how he takes his chest, arms and clubhead back together in the backswing.