Have a look at this (you don't have to actually read it!):
FEEDBACK REPORT ON BUSINESS COMMUNICATIONS SKILLS SEMINAR
We've finished the introductory part of the business writing course now, and will be going on to the first section of the main course: Planned.
After that will follow Lean (to do with how to write using a brief, concise style); Active (using the active rather than the passive voice); Intense (what tense to use); and, finally, Nice & Neat (formatting and otherwise tidying up your document).
Rule 11: Give your reader a structure to follow.