Know your audience and choose your tone.
Less is more.
Intensifiers ("complete", "comprehensive", "extensive", "critical") are just dead clutter.
Use adjectives sparingly. When used, the law of 3 is effective.
Consistency in punctuation and presentation is a hallmark of quality.
Good content is where you start from.
Jargon is fine for people who use it. There is no need to reinvent the wheel.
Paragraph breaks make it easy for the reader, and are remarkably easy to implement.
Active is better than passive.
Be aware of the difference between inductive and synthetic paragraphs