Hard to do those straight lines! I can't do them with my hand unsupported - need to rest it on the paper or surrounding table, so it needs to be a smooth surface. Also I found out my rough watercolour paper is crappy, and almost all my brushes ditto - they don't come to a good point and lose hairs too much. Did the thin lines with a Chinese calligraphy brush, which worked better. I used up a little leftover gouache I had, as well as watercolours.

Anyway - fun, but I'll have to keep up the practice.