Take a break:
Once you complete your first draft, take a day or two before returning to edit it. Coming back to your writing with fresh eyes allows you to read it with a new perspective. Tackle the details of grammar, punctuation, and vocabulary during this second pass. Consider reading your essay backward to help catch typos.
Once you feel your essays are in a good place, it is highly recommended that you share them for review. Share them with your advisor, a trusted colleague, friend, or even your recommender. Getting insights from a trusted source can help you make your essay stronger, as well as catch any typos or small edits.
Finalize and submit:
You are almost done. Before submitting your essays, do a final review. Run a spell check and read the essays out loud to yourself. This trick allows you to identify areas that may need clarification or tweaks. As you review your final draft, make sure that you actually answered the question posed on the application.
Remember, the essay portion of your application is your chance to stand out from the crowd. By sharing who you are as a person, your growth thus far, your passions, your goals, and your voice, you can make a lasting impression. Best of luck with your application process!