In the middle of a simple nature walk I stopped at a fork in the road. Settled with a brush pen and paper, and decided to see what I could draw inspired by the scenery in 45 minutes without any erasing or outlining with pencil. It's a nice challenge and it prevents me from doing infinite number of corrections. It also ensures "wrong" lines are used as a reference for what's right.
I'm not that good with drawing nature. But with practice I hope to get better.