yosemite on scratchboard

A couple posts ago, I posted a detail, and here's the finished piece.
If you don't know what this is, it is called scratchboard. You work in the opposite then drawing with a pen. You scratch away the white.
This particular board is made by ampersand, and it's a black claybord. It's nice because it's not as flimsy as some of the other scratchboards I worked with in the past.
I worked based off a photo using artistic license to add or delete as needed for composition.
Have you ever tried this?
It's a lot of fun.
5x7 claybord black/ scratchboard