Clear the danger with a dominant defensive header. Attack the ball to beat the attacker to it, head through the middle with the forehead, and clear it high and wide toward the touchline, never back across goal.
A server crosses flighted balls into the penalty area; a defender moves off the line, attacks the ball, and clears it high and wide before it can drop. Add an attacker to contest the header. Insist on height and distance to the touchline, never a header back across the goal. Rotate servers and defenders. Heading loads: no deliberate heading at U11 and under, and at U12-U13 keep it to roughly 15-20 headers in a session and under 30 minutes of heading a week, using a correctly sized and properly inflated ball (US Soccer and FA guidance).
Defensive headers are judged on three things and they rank in a definite order: height, distance, width. Height buys the defensive line time to push out. Distance takes the ball past the edge of the area where second balls are contested. Width takes it away from the centre, which is the only part of the pitch where a loose ball is instantly dangerous again. A clearance that satisfies two of the three is fine. One that satisfies none has not cleared anything, it has simply moved the danger a few yards.
The fault that produces those non-clearances is waiting. A defender who backs off and lets the ball come to him heads it off the top of his head while retreating, and the ball loops gently to the edge of the six-yard box. Moving towards the ball, meeting it in front of the body with the forehead, generates all the power that turns a touch into a clearance.
The direction rule is absolute and worth stating as a rule rather than a preference: never head it back across your own goal. A ball headed square across the face of goal is the single most dangerous thing a defender can do, because it arrives in the danger zone with pace already on it and every attacker facing the right way.
Winning the position is what makes any of this possible. Getting in front of the attacker, using the body legally to hold the space, means heading the ball from a set base rather than from a stretch.
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.