Did I bomb my interview or was it successful?

I just had an interview today at a learning center and I'm not sure how it went. I said that I loved to work with kids and I really tried to sell myself with my stories and lesson plans. I'm pretty sure i answered all the questions positively except 1 which I think I flubbed mostly because I forgot a book title and a game I was explaining. The person interviewing me was really nice and she smiled and excellent a few times after some of my answers. Finally, the interview went for 15-20 minutes. So...what do you think? Did it go well or not so well? Thanks!