Í just learned to play the Tibetan singing bowl. I know that first sentence sounds kind of silly as it looks easy to play, but I tried 3 times on my own, and it didn't work, then my yoga teacher showed me a couple of tips, and I could play it next time I tried.
My video
The 2 tips he told me were - 1) Apply some slight pressure while moving the stick around the bowl 2) If you're holding it in your hand, keep your hand flat and don't touch the sides of the bowl with your fingers.
I hope the sound makes you calm and it sends positive vibrations to your third eye and heart chakras.