Number 10 is a total disaster. I tried using a mixture of marble dust, gesso and water to make a primer that was supposed to be similiar to wallis paper. It wasn’t. I will have to find out what the correct formula is. I had a really hard time getting the pastel to even go onto the paper. At some point, I added some liquitex clear acrylic gesso. It has some grit to it. Then I added more pastel, once dry of course. I just peeled the gesso off as I tried to apply more pastel. Just a total disaster. But it was still fun. Great learning experience.