Before writing the letter:
In most cases, agree to write a letter of recommendation only if you can honestly write a supportive letter. If you cannot portray an individual positively, decline to write the recommendation.
Ask for a current resume and as complete a description as possible of the position or program to which the person is applying.
Assemble and review all other relevant information you may have about the person you are recommending. It is often easy to overlook some important accomplishment.
Writing the letter: