What do I do with a student who is not able to keep left hand thumb on neck when doing vibrato. It wiggles around. He has large hands and also complains about first finger hitting the pegs when doing Vibrating With Zero Tension in the Wrist and Elbow Essential Violin Fingering Positions for Beginners Learn Insider Secrets for Expressive Violin Vibrato in Just Minutes a Day K&M Music School FREE Violin Lesson #4 for Beginners FIRST FINGER Vibrato Violin Masterclass.com