Jean, big thanks for your lesson! I really love this technique. I love to draw watercolor and similar classes very inspire. For this picture I used A4 Pure cellulose drawing paper (200 g/m3) and Ultramarine, Burnt Sienna and Payne's gray watercolour paints (Paint Set Russian Nevskaya palitra).
It was a small experiment, but the result pleased me. Thank you Jean! Looking forward to the next class!