How to add vibrato when singing?

i have been singing ever since i was 5 and vibrato comes pretty easy. Step one: you must always drop your jaw when singing. Step 2: when trying to sing with vibrato you must sing from the diaphragm (many pop singers sing from their throat, such as Adele and we all know what happened to her, but when trying to sing loud and beautiful you must sing from the diaphragm). Step 3: Once you have completed step 1 and 2 you are ready for step 3. step 3 you must try to to make a shaking or vibrating motion in your diaphragm, or stomach. for an example here is one of my videos i just posted today from yesterday. you can message me if you have anymore questions on music and singing. http://www.youtube.com/watch?v=oLENdehfqmc

This is somewhat similar to a reed instrument, such as saxophone, which I just so happen to play! Knowing how to use vibrato on that helped my learn to add it to my singing. You slightly move in jaw back in forth as fast as needed, usually the quicker the better. Some notes it will come out naturally, but this is the artificial way.

trying singing up the scale. Eventually you should feel your voice naturally lightening and the soft palette in your throat will rise. Good luck :)