Edited:

A Brief Self Introduction

(This is both for friends on italki and in preparation for an  upcoming English competition.)
My name is Suki. I'm a senior middle- school girl from Fujian, a Southeast province of China.
When it comes to  a self introduction, it strikes me that it can be hard for one to describe oneself since we are always changing as time goes on. As for me, I dreamed of becoming an illustrator several years ago. It is fascinating to create a new, imaginative world with just pencils and paints different from daily life. Yet, I didn't get the chance to fulfill my dream. Then, I found language as a substitution. Since  a foreign language builds a bridge between me and overseas, thus enlarging my world. Now, I have a dream of majoring in a foreign language in university, meeting different people, and enjoying every color of life as much as I had wished to paint on  canvas.

Nice job, Suki! I loved your last sentence. It was an awesome connection about colors of life  and painting. I noticed that you have a broad range of vocabulary, but need help with grammar. For example, the use of commas was lacking in your article. I have replaced the words with ones that make your article clearer. I hope this helps you.

Ms. Morgan