If you are looking for more distance, the easiest way to gain it is to improve your launch characteristics. Getting a positive angle of attack is the fastest way to do so but you have to be careful in how you do it. Playing the ball forward, axis tilt, better face rotation can all help improve launch characteristics.

It is important to understand what movements do to the club face. Rotating the body, or shallowing the arms, both open the face. If you are going to add that, you had better have a way to close the face or else you will struggle with the face control. 

If you've maxed out your launch characteristics, look at swing mechanics like

• Backswing Length
• sequencing
• bracing
• release style