Here are a few things to know and work on if pinky vibrato is hard for you: 1The pinky structurally is like a counterbalance to the thumb. They are connected at the Violinists, what can I do about fourth finger vibrato with a tiny pinky (small hand overall, pen for scale)? I play a normal 4 4, but I struggle to keep my pinky flexible, Top 10 Violin Vibrato Mistakes Students Make The Three types of Vibrato, Taught By tonebase Violin Technique Master the Violin Meadowlark Violin Studio