Tennis Drill Demonstration
Players stands on the baseline, while the coach feeds the ball to one side of the court. The player then hit the ball back, while alternating between close and open stance.
There is no one proper stance in tennis. The pace of the game demands constant adjustments in a player's game, and footwork is one of the priorities to focus on. If you ever watch professionals, you will see that they hit groundstrokes using various stances, so this should be a clue for every player who wants to get better.