Make sure that your adviser has all the forms that he needs - questionnaires and everything else that are attached along with the application form. Inform him of the special procedures he will have to follow, if there are any. Some universities and schools prefer that the letters of recommendation be directly mailed by the letter writer. There are others instructing the student to include it with his application materials. The key to remember in selecting the writer of your recommendation letter is a teacher of a subject your performed exceptionally well in. Make sure that he knows a couple of your notable qualities - from your academic achievements, perseverance, self-discipline, participation in extra curricular activities, service to the school, social skills, maturity and intelligence. It may not be possible to read the finished composition of your letter but you may ask him to include your good points in order to beef up your application. The language must be strong but still sound sincere and not exaggerated. Ask your letter writer to include his contact information. You can also request that he save a copy of the letter. This will come in handy if you will need another referral letter from him for another school.