"The target practice drill can be used for both spinner and seam bowlers. It is a very straight forward drill and if you practice it correctly, it can make a huge difference to your consistency.
Place a target mat on a good line and length. The ball should be hitting around top of off stump. Then the bowler will be given the opportunity to bowl three overs and try to hit the mat as many times as possible.
Remember, practice really does make perfect."