Give a demonstration
A demonstration means “to show someone else how to do something.” Select one small subject for your demonstration. Avoid one that has too many parts or details. Here are some suggestions:
How to sew on a button How to make a pocket How to shine your shoes How to thread a needle How to thread a sewing machine How to make a scarf How to make washcloth slippers How to make a mitered corner How to make a hem How to make gathers How to make a sash for an apron How to make a skirt band How to make a hemmed placket
Because everything you use for sewing is small, you will need to make your samples large. Use contrasting thread, large stitches, and make large buttons so the audience can see what you are doing.