From: me
To: you
Subject: Hi
Dear You, I'm lucky to hear that you're coming to stay at our school so I'm going to give you some advice about it:
- First, you may wear an uniform.
- You mustn't arrive late, the school starts at 9 o'clock.
- Do your homework
- Stay quiet in class.

You must follow this advices or you will be punished. In spite of that, I'm looking forward to your coming.
See you soon,
Me