my teacher`s saying that i should vibrate the sound with my sax, like how they do those in violins.... shaking their fingers can anyone tell me how i can do that?

What you are talking about is called a vibrato. It could be done by moving your jaw up and down (it changes the pitch) when playing. You can start to learn this process by playing a note (say B) and moving your jaw at slow intervals, such as whole notes at MM 100. Then you can speed up. This is how I learned to do vibrato. There is also a way to do it with your diaphram, but dont worry about that because it`s much harder and it doent sound as good.

the diaphram works better if your pro