Open Question: Help! Hiring manager will call me back today, how should I act?

So I'm applying for this job as a kennel attendant at a veterinary clinic. I know it's not the most glamorous job but this is a job I neeeeeed to get to prepare myself for the future as a veterinarian. I submitted just an application the other week, and the receptionist said the manager is going through applications today and will call the people back, but I need to find a way to get myself to stand out from the other people. I should have turned in my resume and cover letter with my application, but I forgot to, so do you think it is appropriate to just give it to her when I meet her in person?? Plus! How should I act/what should I say when I'm on the phone with her when she calls me back?!