Fixing watercolor

Who says you can't fix mistakes in watercolor? A damp nylon bristle brush will loosen some or most color, allowing you to soak it up with a paper towel. But it will never get all the way back to the original white, if you use staining colors as I do. And the paper that has been scrubbed will not take a second application of paint quite the same way, because the torn fibers on the paper surface wick the paint in unexpected directions. And the more you damage the paper surface, the worse it gets for subsequent painting. So really, it's much better to get it right the first time. But still, it's nice to have options when you don't.