You might not have time to practice as much as a professional but you can have their set up in a matter of minutes, concentrate on keeping your upper body balanced on top of your lower body with your arms centered and not ahead of the ball
The moment of truth in the golf swing is when the club impacts the ball and using an impact bag will help you get the correct feeling of impact
A good grip will help your wrists activate in the golf swing correctly and will add power, distance and accuracy to your swing.