I don't think I really need to worry, I'm sure there are other applicants with better qualifications. I'm looking at this interview as a "practice" opportunity. I loathe and fear interviews, and generally do rather poorly in them. If I want to secure a position that I really want once I complete my certification program, I'll need to have better interview skills.
The second class in my certification program starts tonight. Oh, yeah, I got an "A" in the first class, but it was only a one credit class, so it's not a big deal. Still, it's a good start, I guess.