How to write a first-grade introduction?

First-year students can introduce themselves like this:

My name is xx. I am seven years old, and I am a first-year student. In order to introduce myself clearly and write my first composition this semester, I specially looked at myself in the mirror and observed myself again. I'll find a steel tape measure at home first and ask my mother to measure it for me. The height is1.38m..

Standing in front of the mirror is graceful! Look at my face again. Ah! It's pretty! Look, the round face is white and clean, like the fifteenth moon. Eyes round and bright, like two black grapes. A small nose grows in the middle of the face. Red lips, when laughing, two corners of the mouth are upturned, like a boat, really beautiful!

Look at the short black hair separated in the middle, and use two small yellow clips to hold it. It looks so energetic! I also have my own hobbies, like painting, making and imagining.

One afternoon, when I came home from school, I played on the balcony. I cut two holes in two large foam boards of the packaging washing machine and put them on my arm. I want to be a robot, but when my arm is raised, two foam boards lean backwards, and I move my arm back and forth twice, feeling as if I want to fly. I thought: how like a pigeon!

I was so happy that I kept flapping my two "big wings" and shouted, "Mom, come and see the pigeons!" Mom ran to look around and asked strangely, "Where are the pigeons?" I said, "Mom, do you think I look like a pigeon?" Mom smiled and said, "How can you be so interesting!" Do people think I'm funny? I like being an interesting child.