How to avoid cracking in Designers Gouache painting
Cracking can usually be attributed to one of two reasons when using gouache.
1. If insufficient water is used to dilute the colour, the thicker film may crack as the paint dries on the paper (please note that the amount of water needed will differ with each colour.)
2. If painting in layers, the subsequent ones may show cracking if the underlayer absorbs binder from the wet colour.