how to paint using gouache
How to Paint With Gouache. Gouache is a type of paint, and its main appeal is that it is water-based. Other than that, it is very similar to acrylics.However, the fact that it's water-based renders it different uses than acrylics. It could also be described as concentrated watercolors, which makes it heavier and more opaque.egardless of whether you'll be mixing a color, you should always put gouache on a palette first. Start small with a brush, and test the thickness of the paint. Add water, by the drop, and mix. Test always before using.