Hi there my name is Sheldon. I am committed to taking the full draw mix paint online course. So far it has been a very interesting and exciting journey. My question is do the basic principles transfer over to acrylic paints since I have already bought all my acrylic paints and at the moment do not want to switch to oil at the moment. Also why and how do you stain your canvas with the light brown and also what are you using for your pre drawin, it looks like chalk but I'm not sure. Thanks!