Hello

Here is a Sample letter for your case-

"Hello Sir,

I came to know about your yoga academy through a newspaper advertisement and I am genuinely interested to know about the recruitment facilities available at your center.

I have been practicing yoga since the last 5 years and had in training students at Davar Yoga classes since the last two years. So, I wish you could provide me an opportunity to show my calibre.

Hoping for a positive reply from your side."

Hope it helps you!