Dear Youth League Student Union:

I'm in class, and I'm applying to join the Youth League Committee Student Union (if I join the Department Student Union, I'll write "Department General Branch Student Union").

The student union is a strong team composed of students who serve their classmates. It plays a great role in school management and has a great response among students. Joining the Student Union can not only exercise yourself well, better reflect your personal value, but also carry out the purpose of "serving the people wholeheartedly", which is conducive to your growth and development.

I am a (self-introduction, needless to say)

If I join, I will further strengthen my self-cultivation and strive to improve and perfect my own quality. I will always ask myself to "treat others honestly and act fairly"; Ask yourself to "be strict with yourself and be lenient with others"; If I can't join, I will never be discouraged. I must work hard and strive for better performance!

I am here to convey

or

You'd better write down your understanding of the Youth League Committee and the purpose of your joining the Youth League Committee (to exercise your ability, etc ...). Finally, add: I hope they will provide you with a platform to exercise yourself and so on. ...