Glad you got it done, and quite well it sounds! I wouldn't worry if they think you're nervous... you are supposed to be a bit nervous during an interview. Industries are different, but when I would interview and then discuss the candidates with my staff, we might say - she was really sweating, and another might say - well it's an interview, what do you expect. Looking like you're a bit nervous is so much better than someone who shows up for an interview and seems like they don't even want to be there, and are not even trying - I've had those sort of applicants before. Anyway, kudos, you worked hard for this one.