I'm a firm believer in the just let em have fun idea. My boy is trying hard to teach his kids to shoot, too hard, you know this hand here no back a little , turn a little bit more, new squeeze, hold your breath, watch where you point that muzzle. Poor kid. The grandson and I snuck out in the garage the other day with a daisy and lots of BBs. I just watched him shoot, and only offered a little advice very spareingly. At first his form was awful, but in a very short time it improved dramatically, and I really had little to do with it, he just picked it up himself. Still lots of things to learn, but the most important thing he learned was that he likes to shoot.
I have a grown up niece that visited. We were going by a range so I stopped and just let her burn bullets in my blackhawk. When we left she was thrilled. That was fun she said, I never liked to shoot when my dad was trying to teach me. Patience dads teach them to have fun first.