First, I like to integrate warm-ups with court knowledge immediately so that the learning is done the minute they step on the court. Being familiar means they know where the court is divided, where to be, and the zones at which the game takes (running from doubles side-line to net, high knees from baseline to single-sideline). Then, we will focus on a basic contact point to do some forehand volleys and work on hitting the sweet spot, having a loose and firm grip, and stepping into the ball.
At this point, the player should be able to rally with the coach at short court with no unforced errors, be able to add some pace to the ball, and consistently get the ball back to the center of the court
Once the strokes are looking good, focusing specifically on serves and adding them into the mix with some drills (serves, overhead, volley drills). By the end, the player should have a sense in their court awareness and how to rally with few to no unforced errors
After the first lesson, the next few lessons would work in proper footwork and pushing the game further back to develop a forehand and backhand stroke. Once that is done, placement, power and consistency are the main focus to have good rallies and higher quality of gameplay.