Inadequacies as a Seamstress

So for the second time in three or four years, I've had a student surpass my abilities as a seamstress. It will take years before they catch up to my hours of experience, but having sewn in class for 45 minutes a day, 180 days a year for three years, PLUS whatever they do at home, these girls have left me in the dust. Technically, their skills far surpass mine. What is a teacher to do when posed with this dilemma?

I am taking a break from reading up on a subject I need to cover with one of these students tomorrow. Specifially, installing an invisible zipper. I've never done it. I guess I could figure it out, but even if I did, it would take a couple of tries to get it perfect. Not to mention master teaching it. My student has to put one in an EVENING GOWN. No chance for error, here. I started calling my seamstress friends to see who can help me out. We'll see where that leads....

Anyway, I guess it's high time I either decide to become a better seamstress, or stop raising the bar in class. I have the standards set higher every year, and every year kids keep jumping to them. Some won't, but they are the ones who jump for no one. I suppose it's time to raise the bar on myself.