Pastel demo

I was asked to do a demo of pastel painting. I thought I would do a few different techniques. I am not an expert but I have taken some classes from experts. It is another one of those practice things, the more you do the better you get. I was trying to find a cheap surface that everyone would be able to get their hands on quickly. I was reading on WC where one of the pastel artist, I think colorfix, told them to get sandpaper. I thought I should try it out first to see how it holds the pastels, erases etc before I send them to the hardware store. I tried to do a WIP and a video but the battery kept running out and so I will post the WIP here soon. I need to put it all together