1. It's Mom and Dad's address at the top of the letter. Usually, at the top of a personal letter, "the sender" writes his/her address.
2. A personal letter starts with the words: "Dear .... "
3. The date is written under the address of the sender
4. The letter is finished with the words: "Love" and then the name of the sender/senders.
A personal letter can be finished with the words: "Love you", "Yours friendly", "Yours sincerely".
In Romanian personal letter writing we do not put the address of the sender at the top of the letter. We write the date in the upper right corner, and then we start the personal letter with "Dear...." (in Romanian language, of course). The rest of the personal letter is the same as in English.