Any tried oil on panel mounted on mirror

Hi guys,
Glad to be here. I am a beginner to the drawing world. I usually do pencil drawings. That has been my area of interest from childhood. But suddenly, I got interested in oil paintings. I feel like learning it. Drawing is my hobby and I am planning to make it a profession.
I really wonder how this oil on panel mounted on mirror is done Anyone here did this? Can I get a tutorial for that?

Did you try contacting the artist?

Not yet. Hope that someone here knows.