Make sure to look at last week's guard pass for the De La Riva Guard, when Formiga goes to his left side. Sometimes though, your opponent will be able to block that variation and you need to be able to come around to the right side.
Formiga controls the lapel, extends his leg to clear the hook, and then drives his knee over the extended shin of his opponent. It's important when you land to keep your opponents shoulder pinned to the mat with your own, and then switch hips to come to side control.