Earlier in the day, I sketched some blackberries. Their leaves were brown and curling in some interesting ways. The final sketch was a bit light, and didn't fill the page quite enough. I decided to layer a new sketch on top of the old one - ignoring the lines I made before and letting the two compositions overlap. I tried not to let my decisions in the previous sketch inform the look and decisions of the new sketch. The two unintentionally created something unique and better than the sum of its parts.