KEEP IT SHORT TO THE TOP
Many of you let your swings run on too long, and there's no excuse for that with the short clubs. It doesn't take much to hit the ball 125 yards, so my advice is to stop your arm swing when your body stops turning back (bottom).
Don't get me wrong, I'm not telling you to feel restricted. But the farther your arms go on the backswing, the harder it is to get the center of the clubface on the ball at impact.
Also, keep your left arm at a consistent length--whatever it was at address. My swing arc is as wide as I can get it (top). That helps me consistently catch the ball flush.