Hand Vibrato Technique: Hand vibrato is achieved by subtly and rhythmically bending the string up and down (or side to side, depending on guitar type and technique) with your fretting hand. The motion should primarily come from rotating your wrist and forearm, almost like turning a doorknob, rather than just wiggling your finger. This allows for a smoother and more controlled pitch variation. The finger stays relatively firm on the string, acting as the pivot point for the bend.