The trick is to get above your opponent in the air before you j.D. If I get a 5C > 2C > 214C opener then I usually delay the 214C a little bit so they fall closer are closer to the ground when caught in the bubble. When going from just a 22C > 5C opener it's easy to hit j.B too early. It's all about timing your hits so by the time you do j.C > dj.C > j.D you're above your opponent.