Most tour players and better amateurs tilt their spines 3-5 degrees toward their back leg. This sets their head well behind the ball through impact, it allows them to more easily square their clubface and gain distance with a higher launch angle. To get this tilt hold your driver by the grip and place it tightly against your chest and body aligned with your spine. Drop into your golf posture. Tilt toward your back leg, when bottom of the club contacts the inside of your front leg you'll be in a good tilt.