Originally Posted by: David PortelliI had the same issue until I got some great advice on this topic:

1) set a metronome to a slowish tempo 70-90 bpm

2) practice your vibrato as a set of mini bends in time with the metronome and make sure you are aware of the note values you are following.

EX. vibrato in eight notes at 90 bpm 4/4 = 2 mini bends per metronome tick
EX. vibrato in eight note triplets at 90 bpm 4/4 = 3 mini bends per click
EX. vibrato in sixteenth notes at 90 bpm 4/4 = 4 mini bends per click

keep these mini bends as evenly spaced as possible.. It helps to record yourself and listen back to what you have done :)

This is good advice, start slowly and in time as a series of mini bends, you should have this down on non-bent note before you are ready for vibrato on bent notes.

once you have bent the string, you are either going to release slightly then bend back up, or bend up slightly further and release to the original pitch of the note, this should be practiced slowly with the metronome the same as non bent vibrato. You should be cradleing the the back of the neck between where your thumb starts and your first finger starts to creat a kind of fulcrum as per your note bending left hand position. once you are getting the hang, you can try bringing in a motion from the elbow similar to shaking someone's hand which often helps the process.

It's said that the sweetest vibrato comes from bending the string slightly sharp then releasing to the original pitch and repeating that to get the vibrato. Guthrie's got a good masterclass on this topic on youtube.

be patient and you'll get there :)