Tips for writing a great letter:
Be real, honest and vulnerable.
Share your experiences and words of encouragement. You won’t know the girl who receives your letter; simply think about what you needed to hear when you were a teen.
Be mindful not to make assumptions about class, religion or sexuality.
Make your letter as special as possible. For letters sent via U.S. mail, use nice paper.
Sign it – even if you use a pseudonym.