Tailor the letter of reference to a specific position or career field based on the candidate's goals. You may wish to set an appointment to discuss the letter. Give specific illustrations rather than vague generalities. Avoid sexist or racist remarks and physical descriptions. Keep your letter brief.
Experts agree that a page to a page and a half is long enough for most letters.
The letter is much more impressive when typewritten on stationery with your organization's letterhead. Volunteer to provide further information on the phone. This offer indicates that the candidate is a person about whom you feel strongly. End on an upbeat note. Otherwise, an overall endorsement is helpful.