The impulse of the vibrato starts in the fingertip and then continues through the rest of the finger hand, Its important to get the feeling for what this initial impulse shake feels like so that you 4th Finger Vibrato, Is something many people struggle with. Make sure that your hand is relaxed and that your pinkey is strong and independent enough (do 4th finger strengthening exercises if not). Train Your Fourth Finger Vibrato in 10 Steps , 1 Start SLOW Its important to train the CORRECT movement pattern. , I see too many violinists pick up tight, incorrect, or uncontrolled (or out How to Do Vibrato Violin Lessons