I am doing my first open house and my first class - could use some tips

Hi all
I am scheduled for my first open house this Saturday and really don't know what to expect; the store and staff are very nice and seem very willing to accommodate me both in the classroom and on the floor in the yarn dept. However, I am stumped on the projects; do we have to use the Discover projects? I am teaching beginners; I know I would have to get permission to use a copyrighted pattern, but I have run across free domain patterns. I am taking a few completed projects with me and will be working on a hat in between handing out flyers. Thanks.