Start in a dive, flatten out and then pop into a Fade (actually, you can start into the Flic-Flac any way you like, but a power dive/kill/fade is my favorite). Hold it for a second and then do a single Flic-Flac back into a Fade. And repeat....
The clever part is killing the kite out fairly gently so that it doesn't loose any height and then popping it hard into a Fade and letting it rise slightly from the pressure (Elevator). The overall effect is the syncopated beat of Flic-Flac with the held Fade and the kite rising all the way up the window. That's why the power dive works so well to start into it.