Some players who generate a great deal of club head speed still tend to hit the ball too high off the tee.  One remedy for this is to switch to a less lofted driver that will direct most of the force into hitting the ball forward, not upward.

Many people think that using a three-quarter swing allows for more control.  The fact is that a full turn allows the various body parts to work in proper sequence on the downswing.  The full turn helps maintain accuracy and distance.

Many amateurs believe that a wide stance increases the swing turn, when in fact the opposite is true.  Narrowing your stance to within shoulder distance should result in better tempo and added control.

"Coming over the top" on the downswing is a common fault among many players.  To remedy this, think of hitting the inside quarter of the ball.  This will encourage an inside-out swing for straighter and longer shots.

To help eliminate your slice, lay a club on the ground parallel to your target line and on each swing try and take a divot that flies 30 degrees to the right of the target line.  You'll soon feel your swing on the desired inside path