A couple of thoughts:
-Bring in some samples of your work to give them inspiration
-Talk about the needles you use and why
-Discuss threads - the kind used in your samples, how colored threads can change the completed piece
-Stencils - how to mark fabric and the products that can be used to mark and what products might not work a well
-How a quilting design can change the appearance of a quilt. For example a Baptist Fan will give a different "mood" to a quilt than cross hatching
-The battings that are easiest for hand quilting and why
-How big should the back and batting be in relation to the top
-Ways to baste the quilt sandwich