This is the first step to teaching a lay -up.
Using the correct shooting teachnique players must aim to hit the top corner of the little black square on the backboard. If they are standing on the right side, this will be the right corner, on the left, the left corner.
Emphasise if the players do hit the backboard in the correct place the ball should go in every time.
Good team defence is five players guarding the ball, not five separate one-on-ones. The shell drill is where that starts, so here is how to teach help-side positioning and rotations from the first week of the season.
Rebounding is the least glamorous thing in basketball and one of the most decisive. It is also almost entirely a habit, which means it is entirely coachable.
Good spacing is only the start. The best modern offences teach players to attack the defence's rotations and play in a permanent 4-on-3 - here is how to coach that read.