If this is a more formal competition, it is suggested to use formal greetings, such as: good evening/good morning/good afternoon, ladies and gentlemen!

I'm glad to take part in this game. My mother has been happy about it all day.

1) The game refers to the competition you participated in, right? Then maybe it would be better to use competition. . . . The change is like this (because there is no antecedent in the sentence, my personal opinion is for reference only).

I am really glad that I have the opportunity to take part in this competition.

2) If the sentence "mom" is removed from the back, it will be unnecessary and make people feel strange and confused.

Let me introduce myself.

Personally, I think it can be removed. You just want to introduce yourself when you go up to speak. This sentence is a bit redundant. Of course, there can be, but it will be natural to add one in front now.

Now, let me introduce myself.

I am a student. I am in a very beautiful school called Guangming High School. I am in Grade 8.

→ I am an eighth-grade student in Guangming High School.

As you can see, I am a girl. And I am 14. When I was a sixth-grade student, I tried to enter this game. But I was eliminated. What a pity! Toddy, I'm trying again. I hope I can go further. emm。

Personally, I think this paragraph can be removed and changed to another topic. Self-introduction time is short, so be sure to throw out your own highlights concisely. The highlight of this passage is that you are competing for the second time. Invisible, in fact, can only reflect that you are more experienced than others, so the judges may secretly raise the requirements for you. This passage can be changed to show your character strengths (such as being helpful or enjoying teamwork). ), or talk about your favorite movies, books, famous sayings or celebrities. But you must give a reason you like, and this reason is sunny and positive. If this reason is special, it is easy to attract the attention of the listener.

6. I like singing (although I may not sing well). I can play the guitar. But I'm not very good at it. I am very lively and optimistic. I like to laugh. I hope everyone will support me! I really appreciate it．

Self-introduction, personally feel that it is not appropriate to weaken their own advantages. Although I may not sing well, I can't play well and I can delete it here (although I know you are a good boy, modest and honest, embarrassing).

Actually, as a high school student, sometimes I feel stressed. Music is my good friend. In my spare time, I like singing and playing guitar. Enjoying music is a good way to say "goodbye" to all stress and worries. It is said that the smiling girl is very lucky. I hope this works for me, because I like to smile all the time. Thank you.

Self-introduction is often the first step to participate in the competition, and the first impression is very important, so there must be highlights to make people remember you. Good luck =)