One way a person can start writing a story incorrectly is by going off topic. Let's say you are writing a story about why skateboards are good to learn, and you write "Skateboards are good to learn because they are cool and teach you to never give up, I have many friends that skateboard and they never gave up skateboarding even after falling countless of times. We go to the park to skateboard ever Sunday. My friend's name is..." Now, in this example I did not keep the main idea in mind, however if I kept the main idea in mind the story would have started off with, "Skateboards are a great way to teach you how to never give up, even after falling countless of times, you will always get back up. There is so many tricks to learn, plus you can enter competitions once you become good enough." I am no good at writing, but this is just an example. (I do not skateboard, and I do not know a single trick.)
Humans are naturally good. We just do bad stuff. Being evil is taught, not in nature. No person is born evil. They do evil stuff. Most evil things are done with bad intentions. But people can change. People can change from ‘evil’ to good.