The joy of teaching art is learning about so many new mark making techniques from your students. Yes, as the instructor, I am always sharing the tricks of the trade with my students in my classes. But, I must say, as I stroll around the room checking on student progress I discover quite a lot of cool methods that students share with me. Case in point is the novel approach of scraping wet paint with the bottom end of an acrylic paint tube. Look at the lovely textures and marks (right side of image) thats swiping with the end of the tube of paint makes. Thanks to Jill Pasanen for this tip.