2. Start at the beginning of the Story and End at the End.
Don’t start with prologues, introductions or background details. That isn’t the beginning of the story.
At the end, characters may have more to say and more to do, but leave that to the reader. Readers like that. If there is a lot more to be said and done, perhaps there is a second story; but for the first story: Start at the beginning of the Story and End at the End.
3. Great writing is not determined by what you put into it, but by knowing what to leave out.
4. Write your own rules. What works for you?