Screwed up essay...

<p>Hello. I have a question to ask regarding the chances of getting into cornell and UPenn. I am an international student. In our country we do not really make essay a big deal, especially essay in english. I did not know anything on how to make a good college essay. I made the essay for my common application, but pretty much I was explaining my problem and circumstances of being an international student in that essay. I submitted it, and a few weeks later I decided to learn more about making a good essay. And as I learned about it, I realized that the essay I made in my CommonApp was so bad, something that I should never ever write in an essay.
I tried to change it, but of course I can not change it. Now I'm trying my best to do a better essay in the supplement part (for Cornell), but it still hard.
I believe my screwed up common application essay will decrease my chance to go to cornell greatly..I do not know what to do.
Can someone give me an advice?
Thank you</p>