1. your handwriting is beautiful. even if it's to the point of almost being illegible, the recipient of your letter knows how personal it is when they see how you wtite
  2. mail kinda sucks these days. L.L. Bean catalogs and water bills are the usual suspects in the mailbox and a letter from a friend, no matter how distant, is a pretty wonderful surprise
  3. it doesn't have to be a strongly moving poetic masterpiece. believe it or not, the people who love you actually care about what's going on in your life. talk about how school or work is going or literally anything