Dear (insert contacts last name)
Paragraph 1: This should introduce the subject of your letter to the reader, and you should also introduce yourself.
Paragraph 2: This paragraph will contain the bones of your letter. You want to include whatever it is you are writing the letter about, and expand on what you mentioned in your introductory paragraph.
Paragraph 3: This should be a concluding paragraph which will restate your reason for writing and it should also include a call to action for the reader. You should also thank the reader for taking the time to consider your letter.