Strike a series of served balls first time. Set the feet quickly, keep the shot low and on target, reset fast, and hold the technique across repeated reps from different angles.
A feeder serves a quick succession of balls to the striker at the top of the box, varying the angle and pace. The striker strikes each first time, keeping it low and on target, then resets fast for the next. Serve every few seconds to build a rhythm. Rotate the striker and feeder, and count clean strikes on target.
Repetition is the point of this exercise and it is also the thing that breaks the technique, which makes it more interesting to coach than it looks. The first three shots are usually fine. By the sixth, the feet are late, the body is square, and the striker is reaching rather than setting. That deterioration is the actual content, because it is exactly what happens in a penalty area when a second and third chance arrive in quick succession.
So the skill being trained is the reset rather than the strike. Getting back to a balanced, ready position between serves, quickly, is what allows the technique to hold. Players who watch their previous shot rather than recovering their stance are the ones whose fourth attempt goes into the stand.
Varying the angle of service is what stops it becoming mechanical. A ball from the left, then the right, then straight, forces the body shape to be rebuilt each time rather than grooved once and repeated. Identical serves produce a player who can finish one specific ball.
The standard should stay low and on target rather than into the corners. Under this kind of tempo, chasing corners produces a scatter of misses and teaches nothing, whereas a demand for on-target contact keeps the technique honest and the feedback clear.
One caution: this is a fatiguing drill and quality falls off a cliff. Sets of six to eight with real rest between them are worth far more than a continuous two-minute barrage, which mostly trains hurried, off-balance striking.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.