"Average copywriters write average sentences. You, I’m guessing, don’t want to be average.
You want to be great. You believe you can be remarkable." (CopyBlogger.com)
It doesn't apply only to copywriters, right?
If you want to be a remarkable writer, why don't you give a look at the following tutorial?
You'll learn to:
1. Insert Facts
2. Create Images
3. Evoke Emotion
4. Make Promises
5. Practice, practice, practice...