As one of our close artist friends has said, the true test of how great an artist you are is if you can eschew the eraser entirely and create a brilliant masterpiece out of scratch, no erasing and no going back to correct things.
While that's not accomplishable for everyone, that is the idea behind this drawing tutorial, in which you'll be taught how to draw a monster from scratch. You'll need a pencil, sharpie, and an agile hand.
Have an iPhone? Check out all 200+ new features coming in iOS 13.