There were a few approaches I took in handling the waitlist:
1) find weakness in candidacy and try to improve upon that
2) be proactive: sign up and take classes, take more responsibility at work, talk to faculty and students, send in an extra letter of recommendation
3) show commitment, let them know Johnson is your #1
3) MOST IMPORTANT: keep in touch with admission and tell them about your approaches and progresses. The idea is that you want them to be familiar with you and will recommend you when they come to review the waitlist. Of course, don't be pesky, make sure you really have something important to say every time you reach out to them.
And I am a domestic student. I got accepted a day after my feedback session. I hope the information will help some of you. Keep me posted!