I am experimenting with acrylic paint because it seems to be able to paint on a variety of materials.

This is a thick glass plate used for processing leather products. I do not know the details, but it seems to be processed by rubbing the surface of the leather with the side of the plate.
I painted gesso on the glass plate and drew a line on it.

The gesso was so thin that it came off, and it was very difficult.
It was a lot of work, but I managed to finish it.
The color changes when the light shines on it from behind, but it will take a while before I can calculate the effect and get the paint wet.

アクリル絵の具は色々な素材に描けそうなので、実験しています。
これは革製品の加工に使う分厚いガラス板です。詳しくは分かりませんが、側面で革の表面を擦って、加工するようです。
そのガラス板にジェッソを塗って、lainを描きました。
ジェッソが薄くて、剥がれてきてしまって、大変でした。
だいぶ苦労しましたが、なんとか仕上がりました。