To get really good at pinched harmonics you MUST practice them every day. Practice every pinched harmonic on EVERY fret and EVERY string, starting on 1 string then work your way up and finding each fret's respective "SWEET SPOT" with your picking hand.
Bending:
Practice bending on every string
Vibrato:
Again practice on every fret and every string. It takes YEARS to develop a great vibrato and Zakk's didn't happen overnight.
Finally:
Practice everything together and practice it EVERY DAY! You'll eventually notice improvements...but it does NOT happen overnight. :-)
I started learning guitar because of Randy Rhoads..but Yngwie J. Malmsteen is my biggest influence.
