I used to see a lot of videos about how to do the vibrato, not because I wanted to develop it by myself, I trust in my teacher and she told me that I wasn't ready. I only did it because I wanted to know more about the technique.
In one of those occasions, I found a video with only one exercise. The video said that the student must have been playing the instrument for a period of time and in a moment the student will develop the vibrato by himself. I was curious so I tried the exercise.
(It has spaces) (Taken on academic purposes from felix ps, Tutorial sobre el vibrato en el violín)
(The exercise is in the minute 5:32 and the video is in Spanish)
And I did something very similar to the vibrato.
I never practiced the vibrato before that moment, but I didn't feel ...bad. How the position was new for me I couldn't last for a long time.
I did the same exercise again the next day, and the result was the same.
I'm still doing those exercises because they are...funny. I really like to do it and it's my favorite part of my daily practice (but just a couple of minutes).
I haven't said anything about this to my teacher because I'm very shy and when I want to, I almost have a panic attack. She said that I struggle with the affination and tempo, but I feel that when I practice in front of a person...I'm very nervous, even among close people.
And I read that practicing the vibrato (I don't know if what I did was a vibrato) without affination is a horrible mistake.
But I didn't want to!!! I was just playing and I really like to do it.
Maybe I'm overreacting, but I don't know what to do. Should I still practice it? Or should I stop? Should I tell to my teacher? Or not?
I'm very confused and a bit scared.