Transferring your practice and energy on to actual course improvement is very difficult, so it is critical that you use this transference technique
All great golfers have one thing in common, they deliver the club to the ball from the half way down position in the same line as the release through impact to the half way through position, creating a Powerline
A great visual drill to fix an outside in swing path is to place a string on the ground to represent the target line and place a head cover just outside of the line, this will visually help you keep the club inside on the downswing so that you do not hit the head cover