Grab your guitar , put it on the distortion channel , get your pick and get ready to have some fun!
This is how I hold my pick (it's a Dunlop tortex ,great pick)
When ready to do a pinch harmonic , bring your thumb close to the tip of the pick , as shown above
You want to hit your strings in a way where your thumb will brush against the strings for a split second
You can experiment on where on the string to hit because it changes its tone depending on where you strike the string Hope I helped ! More guides on guitar tricks will be made