Create separation from a marker and finish. Sell the drop to draw the defender, spin sharply across their shoulder into the space behind, take the pass in stride, and finish composed.
A server holds the ball with a striker marked tight by a defender. The striker drops short to draw the marker, then spins in behind to receive the pass into the space created and finish. Sell the first movement, then change direction sharply across the defender's shoulder. Serve the ball behind, not to feet, and rotate.
Separation is created by movement rather than by speed, which is the good news for the majority of strikers who are not the fastest player on the pitch. A defender marking a static forward is comfortable. A defender who has been pulled two yards in one direction and then has to reverse is beaten before anybody has sprinted.
The mechanism is that the first movement has to be believed. Dropping towards the ball with real intent, calling for it, showing for it, makes the defender commit forward to deny the pass into feet. That commitment is the whole product. A lazy half-step drop does not move him, so the spin behind has nothing to exploit.
The spin itself has to be sharp and across the defender's shoulder rather than a wide arc around him. Turning tightly means the striker is already inside his blind side when he tries to recover; going wide gives him a clear view and a clean recovery line.
Timing with the server is the detail that gets skipped and is what makes it work in a match. The spin should happen as the passer is able to play it, which usually means eye contact first. A perfectly executed double movement with a server who is not looking up produces a striker in acres of space watching the ball go elsewhere.
The honest note: this movement fails often, and it should. A defender who does not follow the drop has given the striker the ball to feet instead, which is also a good outcome. Both results are wins.
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.