Так он вроде выглядит по-живее и правильнее
- What should I wear for the open lesson?
- You should wear this costume.
- Do you really think I should wear this costume?
- Yes, you should look good. And it fits you well.
- It doesn't matter.
- You’re wrong.
- What should I do?
- Firstly, you should be on time.
- And secondly?
- Secondly, you should actively work during the lesson.