This cast is a different way of executing a curve from left to right. This curve is usually considered negative since, after forming a wide, lazy loop, you flick the rod tip down and to the left to force your line down before the loop can evolve completely and straighten the line out. That's the most popular way to execute this practical cast.
Such an original nonconformist as I am, I'm going to try to add a little more control and accuracy. So I vary the technique substantially.
Description: the line curves to the right in a semi-circle from the rod tip to the end of the leader.
Execution: after a very high cast, stop the rod and make a left reach cast, shooting line. Just then, bring the rod tip back in front of you without lowering your arm until the loop has played out. Then lower the rod.
If it doesn't come out right, it's because...