Kinda embarrased by my essay...
Ah, don't be embarrassed. Sometimes we find inspiration, and sometimes we write stuff that is not inspired... it is okay to not be inspired all the time.
I like the conversational, natural style you use, but not all readers like that. Some readers want you to be more formal.
Look at how I fixed this run on sentence:
So my name is xxx, looking at my name you can tell that I have some kind of Asian-descent. Well, you're right; I am Chinese-American.
Maybe you already have an ideal vision of me because of my nationality. --- Do not say "you." It really is better not to address the reader "you may notice this and that..." it is not good, because it seems a little to presumptuous or something.
You probably know some of the Asian stereotypes, like I'm probably great at math, I'm soft-spoken and quiet, I keep everything bottled up inside, I'm a bad driver, I have strict parents who keep me at home and make me work my butt off in school, etc. ---- this is funny! Well... even though I really like your writing style, I want to advise you to GET FOCUSED ON YOUR PLAN for the future.
Know what I mean? Don't make this all about you and your personality. Instead, make it an essay about your intentions for college and career. Do not tell all about various experiences, your brother, your grades, etc... instead, use an essay as an art form for conveying a powerful idea. What is the idea you want to capture with this?
The first sentence and last sentence of each paragraph are very important. Use those sentences to make it very clear for the reader. What is your message to the reader? I often tell essayists this:
one essay = one big idea
Do not try to talk about everything. Choose one idea, perhaps the philosophy or goal that guides you as you choose your college and your major.
:-)