A drill

Overhead, Underhand, Stab!   The drill master  Called. Shana bashed the  Sun battered practice ball. She mindlessly  Snuck in a side slash. At that moment the  Drill master Looked at her and saw that she hit the ball with an extra hit. Repeat! Called the drill master. Then she did it again. The drill master walked over to her and she Realised what she did wrong and tried to fix her problem  But it didn't work.