I'm learning so much about gouache thanks to Ann Shen! She is a fabulous teacher and her classes are really enjoyable. I didn't know how to use gouache, before I was using it like watercolours. Ann shares all the secrets and she is so passionate with gouache that I'm starting to feel more confident with this media and practicing new colour palletes. 

Gouache Colour Wheel

Monochrome Butterfly

Complementary Butterfly

Split Complementary