Hi guys, I've been finding myself in situations where I must give instruction to first-time or very new players. I have a hopper that I use to feed them balls, I focus on their forehand side first and try to give them an idea of what generating topspin feels like with a semiwestern grip. They get the idea after a while, getting a few over the net eventually. I'm wondering if I should just let them do whatever is comfortable instead of focusing on specific strokes at first? Is there some sort of established convention out there on how to introduce new players to the game, and how to progress with them? Thanks in advance!