What did I do wrong with this chalk paint recipe?

Heres some recipes for chalk paint that may explain what went wrong. salvaged inspirations.com/best-homemade-chalk-paint-recipes/

I used to make my own and I would mix about 3 or 4 heaping Tbs into enough water to make a smooth and pour able mix. I also used closer to 2 c paint. I was not an exact measurer but this seemed to work. POP will set up fast so stir quickly and add to paint. For me, I stopped using my own and went exclusively to Annie Sloan. It is expensive but always consistent and worth every penny.

I have had great success mixing my own. I do 1 part paint to 1 part plaster of paris. Then I add water to reach the consistency I like. As your using it every now and then you may need to add more water. I painted a bed in the winter and would get tiny bits of dried in the paint. I think because it was cold and I did it in the garage. But they easily sanded off and the bed turned out wonderfully! Hope you have better luck next time!

Also, I have used Annie Sloan and it is great and convenient. A little pricey. Joanne carries and inexpensive brand and I used it on a bench and it worked out great as well.

Walmart carries Waverly brand chalk paint. Least expensive brand I have found and it is easy to work with, only downside is it is a bit smelly. You can also order it at Walmart.com.

Your Hobby Lobby also carries chalk paint.

I use the Waverly brand from Walmart (craft dept) and it is great - highly recommend it too!