You've seen several photos that Fax Ayres and I have entered in our competitions featuring the light-painting techniques we learned from the best in the business, Harold Ross. If you're interested in knowing more about this technique, you can go to this article from Digital Photo Magazine: https://www.dpmag.com/blog/light-painting-with-harold-ross/
You can also go to Harold's blog site at https://haroldrossfineart.wordpress.com/, where you can see some videos and sign up for one of his workshops.
Gerry
