How to color the white paste mask?

Paper-based paintings can be pasted with paper pulp and then colored, but the effect is not good. Slurry painting, similar to painted clay painting, is a kind of arts and crafts works created with pulp as the main material.

1. When making paper pulp, tear the toilet paper into pieces, put it in a container, soak it in water and stir it into mud. Not too much water, then add a proper amount of latex and mix well. When in use, scoop it out according to the dosage and add the required color.