The golf course asks many questions of you as a golfer on every shot. The lie, wind direction and even the temperature need to be taken into consideration when selecting a club to execute any given shot. Add this to the new swing thoughts and feelings you have been working on in the lesson and on the range can make transferring your new skill set onto the course.
This is why playing lessons are so important in your development. Improving your understanding of "how to score" IS THE KEY INGREDIENT in reducing your handicap and improving your enjoyment on the golf course.