Simply put, I don’t have stickers. I ordered stickers for Air Mail, but that is more so for mailing the letter rather than something cute. Obviously, for international mail, these stickers will be used, and they will be placed at a diagonal below the return address. If there was a way I could print that, I would.
In regards to FBs (Friendship Books), I will assume that certain people might want a FB. If so, I will add my name, and address to the book, and send them to the next person that I would write to (unless they don’t want such). In regards to FBs, I will add an extra ounce to my letter for postage. Again, domestic letter will get printed directly on the envelope.