I used Lesson 47 (Pinch Harmonics), was one of those things I could never control until a couple weeks ago, and kinda came out of nowhere! As Syn said it takes a lot of experiment and as PG explained where you pick the string makes a huge difference!
This is improvised over a backing track I found on Youtube, so theres some hesitation here and there, but whatever.
Anyway I feel theres more here from the lessons than just the pinch harmonics, but was something I had fun with so decided to use this one!