Beat a defender with the elastico. Push the ball out with the outside of the foot, snap it back inside with the same foot in one motion, and accelerate past on the inside.
The player drives at a defender, flicks the ball out with the outside of the foot, then snaps it back inside with the same foot and accelerates away. Emphasise soft, quick feet, doing the two touches in one motion, and staying close to the defender so the feint bites. Practise both feet and start slow before adding speed. Rotate the roles.
The elastico is a genuinely advanced move and there is no point pretending otherwise. It asks for two opposite touches from the same foot inside a fraction of a second, and a player who cannot yet keep the ball tight under a normal change of direction will not produce it under pressure. Thirteen and up, and only once the basics hold.
The mechanic is one motion, not two. The outside of the foot pushes the ball away, and before it has travelled more than a few inches the inside of the same foot snaps it back. Players who learn it as two separate touches get a slow push followed by a slow pull, which telegraphs everything and gives a defender all the time he needs. The whole value is in the speed of the reversal.
Proximity is what makes it work at all. Performed three yards from a defender it is a party trick that changes nothing, because he has not committed and does not need to. Performed at a yard, the outward push forces a genuine weight shift to that side, and the snap back goes past a player whose feet are now planted the wrong way.
The common failure is touch size. The ball must stay within the width of the body throughout. Push it too far out to sell the fake harder and the defender simply takes it, because for that moment the ball is closer to him than to you.
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.