Watch the Lullaby of the Leaves online guitar lesson by Mimi Fox from Jazz Performance
The trick with artificial harmonics, as with any technique is this: you have to put the time in! In order for me to get to the point where I am taking entire solos with artificial harmonics, or using it creatively to play the melody of a song, I had to spend many hours adjusting my hands to get a nice clean technique. My primary concern initially was not to play hip solos with harmonics, but to play simple lines well. Once this was achieved I could then start playing more creatively. My philosophy is always work on your execution first then the hip ideas will flow effortlessly.