Just remember to express interest in WUSTL, they LOVE that for some reason. Try to visit, or go to a uni fair where they have adcoms present. If you can’t do either, email them and ask them very specific questions that you cannot find on their website or something. When they respond, reply to their email with a: “Thank-you very much, I am now very interested in your $h1tty School” type email. If you do that, and write good essays ofc, you should get in.