Be sure you narrow your topic as quilting is a very broad topic.
What is the main thing you want your audience to know? If it's how quilting has changed, make a list of then and now. If it's about the investment of time and the difficulty of assigning a monetary value, hone in on what makes it so. If it's about the passion and joy of creating an object of beauty and comfort for both loved ones and complete strangers, talk about that.
Humor. Make your audience laugh up front and you will hook them.
I will listen to anyone about anything if I sense their passion AND they have a sense of humor. Otherwise, if the topic is boring and the person is humdrum, it's a long 7 minutes.