With your knees bent and your back bent to 20 degrees, drop step then turn, bounce the ball then chin the ball up to the power box and being square to the board, shoot. Do twenty of these then move to the other side and do the same thing. If you are not doing every aspect of the move correctly then do each part of the move more slowly. Form and technique then speed up the move and work on quickness.
Four players standing still make every ball handler's job harder. Teach V-cuts, L-cuts and back cuts so your team gets open and punishes defenders who overplay.
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.