It’s been a while since I had an interview- anything I should make sure I include? The interviewers are not the hiring official, if that makes a difference, and there may be a second interview.
Ask A Manager has great advice on this. She says that you should think of it as a "follow up" email, not just a perfunctory thank you. Here's a link. I definitely leaned heavily on her advice when interviewing for my new job.