Mistake after sending in App

<p>Is it ok if there's a small grammatical mistake on the essay? Like I forgot to close the parentheses and add a period...How bad does that look? Is there any way to change it after you sent it online?</p>

<p>There's nothing you can do now. Don't worry that's such a minor mistake it's not going to kill you.</p>

<p>Yeah, chill out. If you didn't proofread it enough times before sending it, I don't know why you would proofread it afterwards.</p>

<p>ZZ3</p>