Phone screen booked, I am thrilled - what worked for you?

After 18 applications I finally got a call for an interview as a dental hygienist. There are 18 people counting on me, so I am trying to be careful. They liked my volunteering experience. Any last-minute tips?

Thanks for writing this out. I went through something close to it 13 months ago, and it settled down once I kept a simple log of every call and form.