Masking fluid (or liquid frisket) is a pretty handy item to have around. Many of the scenes in Jack and the Giant Barbecue have characters in front of the big, wild & woolly American West. I like to spread out and paint that kind of backdrop with equally wild brush strokes. That’s a whole lot easier if you don’t have to carefully paint around the characters.
Masking fluid is kind of a rubbery syrup that you paint on your paper wherever you don’t want watercolor. It dries to a water-repellant film. As you see in the pictures, I masked out Jack and his faithful pony (also using bits of masking tape) so I could slather on the paint with abandon.When I finished painting the background, I peeled away the mask using a rubber cement pickup.