Granted, a finished painting is usually considered to be the antithesis of chaos. Composition, color scheme, perspective, proportion, you know the drill. Trouble is, after you've worked hard to get all of those things right, you might still have a spiritless painting. Very pat. The kind of painting where you look at it once and say, "Wow, that's really good," and walk away, dismissing it from your mind & memory.
Watercolor has a special affinity for chaos. It tempts you to improvise.
Pick up a wild card, give a nod to the personal, unverifiable and unpredictable. Designate a "Chaos Appreciation Day" (or two, or more).
- lady guerrilla painter