Ok well it sounds like you've done some pretty solid work there and should have things to talk about in an interview. Have you ever gotten an feedback from employers or recruiters as to why you were not picked for a job?
It's usually pretty generic stuff. I wasn't a good fit, or they found someone else that's a better candidate, etc. Liability reasons cause them to withhold details. Many people consider all interviews practice, but practice only makes you better if you get proper feedback.