Collect chalk dust, sort the chalk dust by color, find a few small bottle caps or paint trays, put the chalk dust in, add a little water, and then stir. You can't have too much water, it depends. Finally, you should put it in thick water and wait for it to dry. Hey hey. Homemade watercolor powder succeeded! In fact, the previous step is to grind the chalk ash more finely! )

There's another one! Ha ha. That is, when you are making a blackboard newspaper or drawing, put the chalk dust on a piece of paper and blow it where you need it. It will have a smoky effect, which is very good!

Hehe, I think it's good, don't you think? joke