My room rules make a poster write what people must mustn't

1. You mustn’t smoke in my room.

2. You mustn’t run and jump in my room.

3. You mustn’t shout in my room.

4. You mustn’t  lie on my bed.

5. You mustn’t enter my room without knocking.

6. You mustn’t litter in my room.

7. You must keep silence in my room.

8. You must be calm in my room.

9. You must respect my rules in my room.