There is an important point/lesson here. Many candidates are anxious to get their packets in "early." That's fine, but be sure to balance that enthusiasm with making sure you submit the best package possible. That means taking the time to ensure you capture all relevant information (i.e., on your activity record), have a chance to proofread, etc. One of the downsides of internet-based applications (vs. the paper of my day), is that it's so easy to hit the "send" button. And one of the downsides of texting (where spelling and grammar are abandoned), is that it's easy to take the same approach with more important documents.
A few typos in an essay won't be the end of the world, but as a general matter it pays to SLOW DOWN and make sure things are exactly as you want them before you hit "send" or "submit."