When writing a letter of recommendation you should know the person well enough to discuss. Also, there are three types of recommendation letters: employment, character, and academic. It is best to keep the letter as short as possible and only include pertinent information. The first paragraph should state your purpose, include how you know the person and for how long. The second and third paragraphs should include specific examples and traits related to the individual. The closing paragraph should express your specific recommendation. Show your confidence in the individual and reiterate any final points you feel are necessary.