artificial harmonics
"i don't know a guide, but what want to do is fret a note with ur left hand (obviously), and then us ur pick and the edge of ur thumb to make the harmonic. the way u hold the pick is important, some people hold the pick between the finger tip and the edge of the thumb so that the pick protrudes from the palm. but u want to hold ur hand in the folowing way.straigten ur hand first so none of the fingers are bent. the bend the second joint in ur finger (eg the middle one) 90 degrees.(u have to keep ur knuckle unbent). then bend the last joint in the fingure(the one near the nail) 90 degrees. lay the pick across the side of ur finger so that it is not gripped by the tip. then place ur thumb flat across the pick. ur thumb should be parrallel to the palm of ur hand and the last digit of the finger. lastly is is important that u let only a very small amount of the pick protrude.
when u actually try the pinched harmonic u strick downwards at the string and let the side of ur fingure hit the string after the pick. u might have to dig ur hand into the string a bit.
lastly u have to hit the harmonic at the right spot and it is easier if the fretting hand is lower down the neck so that the lower harmonics can be used.
an easy harmonic to hit is if u fret the ninth fret on the g string and try to place ur picking hand over the very edge of the pickup, nearest the bridge. i have covered humbuckers so u mite have to ajust this position if u have single pickups.
if all this doesnt work getting a thicker pick might help and increasing the volume and distortion of the amp will make the harmonics ring better, and if you have a compressor turn it on
anyways good luck"