Our Sensei has always said that getting your black belt means your just ready to learn now and are an 'advanced' student. Given the cirriculum that we are taught at the black belt level I would have to agree.
I just did that in a demo last night, so I know how you feel... I was in front of approximately 50-75 people and I think I maybe did one kata mistake free. Thank God I wasn't called up to break.. I probably would have broken something.