With advanced players, we skip most of the basics, but often there is something to review. Something as simple as footwork to fix a shot, or finding the source of a third shot issue is actually the serve. We talk through those results issues, work backward to find the cause(s), and plug those leaks, so to speak.
At this point, hopefully the growth mindset has taken hold. It sounds simple, but it's by no means a given. Mixing a competitive mindset with a growth mindset of patience took me getting hurt bad enough to spend the better part of a year to START figuring it out. Ironically, we are then back to the beginning. If the switch fully flips, we are no longer working on our mindset to improve at pickleball. We are working on pickleball as a test of our mindset. Then, it's a razor thin balance of perspective and performance. That performance, to be clear, is not the score. It's your decision making, behavior, and setting/hitting targets/goals. For today, and for next year.
Here I'm expecting to continue the same as above, but progressing as an advanced player means reinvention to get to the next level. For me a couple years ago, it was simply changing my grip. It was the only way to move upward, but it was painful for a while. A few months later, the improvement was dramatic.
The above continues, but as the basics are covered more fully, we transition to game scenarios. At this point, it's an iterative process. We are never really "done" working on components of our game. We level up the serve/3rd routine, 2nd/4th, 3rd/5th, and net game. That exposes new things to work on, and we hit them.