This was a bit of fun and so easy to do. It is just overlapping circles in the three primary colours (red, yellow, and blue) of Schmincke Horadam paint with branches and trunks drawn in last with Faber-Castell Pitt Artist black ink. You can see how overlapping the colours has created green, orange, and purple and how using varying dilutions of paint has intensified or weakened the strength of colour.
Watercolour Bubbletrees |