I’ve been looking for a diy recipe of gesso using marble dust and pva glue. There are lots on YouTube but generally so gagingly goofy I can’t finish them. I bought a few cheepy canvases from michaels and want to smooth and stiffen them. I’m planning to play with hairy brushes and acrylic paints (starting a painting class soon). I’ve used yupo for airbrushing and thought I’d try the canvass too. That said, I think it should be something like 2 parts dust, 1part glue, and enough water to thin it to desired viscosity. Would appreciate any hints or formulas.