This is 7"x10" on very rough watercolor paper that I coated with white 'Fine Tooth Colourfix Primer' and then toned with deeply pigmented watercolor. I put red under the green pears and green under the reddish background. I got so much into the layering that I ended up nearly smearing. I had to spray it with workable fixative often. The 'tooth' of the primer isn't as good as the that of the sandy papers. Maybe I will add more grit to the primer and see what that does.