there are actually 4 ways to make it https://salvagedinspirations.com/best-homemade-chalk-paint-recipes/ and 7 ways to seal it after https://www.youtube.com/watch?v=DnMTAh2c0e0
I made some using calcium carbonate powder: https://thevanderveenhouse.com/diy-chalk-paint-picture-frames/
I share a recipe in this project where I turned a mission table into an industrial looking piece. https://www.girljustdiy.com/diy-industrial-end-table-makeover/
Here's one way: https://www.hometalk.com/457902/diy-chalk-paint-vs-annie-sloan-chalk-paint
Here you go Eileen with the recipe plus tutorial in case you need it. https://bushraslifestyle.com/how-to-chalk-paint-furniture-plus-chalk-paint-recipe
Hope it helps!