Keepers: react through the screen. Stay tall and set behind the screen, pick the ball up as early as you can, and react sharply to save.
A mannequin screens the keeper's view. The server strikes past it and the keeper reacts late to save. Emphasise staying tall, trying to see the ball early past the screen, and a sharp reaction. Vary the corner. Rotate the keeper.
Fork it into your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block.