The main ten key points

1. Analyze/Determine the purpose of the letter

2. Anticipate/Determine audience

3. Adapt  to method of delivery; direct vs indirect (active vs passive)

4. Brainstorm ideas to be conveyed in letter

5Research/Gather the facts that you wish to convey in letters

6. Organize: Prepare a concept map to structure main ideas

7. Compose: write a draft, compose paragraphs

8. Revise: eliminate abbreviation(s) of jargon, review the tone, improve clarity by organizing and structuring thoughts  eliminate wordiness.

9. Proofread: Review message looking for grammar spelling, punctuation, verify facts

10. Evaluate: Reread the letter  from your audiences perspective to determine if it will deliver the message effectively given the letters' purpose.