"The key to good writing in academia is to tell them:
what you are going to tell them,
what you are telling them,
what you just told them."
I use this all the time in my technical writing-especially on 1-pagers or marketing slicks, and on web sites where the page is at the top level of that product or service's description.
Do you have any simple methodologies like this that you use?
One I also use in certain situations:
1. Statement of need.
2. What is needed.
3. How nice things will be with your XYZ widget in this case.