Hi Everyone...Merry Christmas! I would like to know how to develop a good, reliable vibrato/tremolo. As of now, when I need to execute a vibrato...I use my right pinky and shake the horn. The problem is...it's very inconsistent. Sometimes it sounds ok and sometimes I cannot hear a vibrato. I also notice that when I am on the cornet an flugelhorn, I can control it more as opposed to when I am using the trumpet. I have been watching a lot of videos on youtube and I notice that most of the good players have vibratos just using their mouths(or lips and tongues?). How do I develop this? Thanks in advance!