The best one-two punch in golf is good chipping and putting. But many times, poor chipping puts too much pressure on your putting so if you Improve your putting, you can relive the pressure of chip shots. A chip swing is an exaggerated putting stroke, so practicing one shot will help the other.
This is an old tip that someone reminded me of several weeks ago. Many golfers tilt and turn their heads while at the address position. This is an issue because golfers tend to start their back swing in the same direction their heads are tilted.