https://photos.app.goo.gl/uQEe56KKZX3TeKou6 Click on video for sound.
After my league pool year session ended, I stayed with it and work on my head ball break for 8-ball and 10-ball, and what I discovered was that it is in all in the wrist action.
I do not view instructional videos, but I believe they are few and far between that give this advance stroke on the break. I hope this is helpful for those of you that struggle with either the 8-ball or 10-ball break. This is what my 70 yr. old break looks like, not much resemblance as when I was 20, but nonetheless it can be effective if you hit the head ball solid. Whitey