No matter how careful I am, I manage to put a nice dent in a canvas from time to time. Sometimes they come this way and I didn't catch it in the store. And sometimes, a dent or bulge appears after a painting is completed—simply because it sat too close to something else. Either way, it's a drag. The great thing is that it's easy to fix and really, there's no harm done. Just turn the painting around and lightly spray the area with water. Gently rub it in to the canvas and let it sit somewhere to dry. And voila! It's like it never happened.