Ask the applicant to write out a list of their recent accomplishments, leadership positions, awards and other things of which they are proud. Request a copy of their resume as well. Get details on the specifics of the application: where exactly they are applying and for what position, as well as deadline information.
Brainstorm about the things that first come into your mind about the applicant. Stories highlighting their achievements or strong traits are appropriate. When your brainstorming session is done, look for words or phrases you wrote down that seem particularly relevant to their current aspirations.
Start the reference letter by explaining your relation to the applicant, how you came to meet and how long you have known each other. Explain your own qualifications. Your praise will be better served by providing your professional experience as a context.
Submit your reasons, evidence and anecdotes that illustrate why the candidate is exceptional. Focus only on their positive skills, traits and accomplishments. Mentioning failures or setback is appropriate in the context of illustrating an individual's determination and perseverance, however.
Close the letter with a concise summation of the reasons you find this applicant worthy of your referral.
Proofread the letter thoroughly to catch any grammatical or typographical errors. Read it out loud to catch mistakes that might be missed otherwise, such as awkward wording or repeat phrases. Type your full name at the bottom. Sign underneath your name in blue or black ink. Include your contact information if you choose.