Think of asking a question as your opening sentence.
Tell a gripping fact.
Announce good news.
Get straight to the point.
Use personal pronouns( Us, we, you)
Tell your readers WIIFT... what's in it for them.
Write everything from the readers point of view.
Make good use of white space (not too dense text).
Attract attention to the important parts (Color, Capitals, Bold, Underline etc.).
Increase readability by spacing, bullets, lists)