Craft sales are hit and miss. Most people come to get ideas. My guild makes more money selling a pattern for an item we make then the item. We try to have a new shape pincushion, different pot holder, etc to draft the pattern to sell. Also presentation is a big factor. Things siting on a folding table usually won't gather much more then a glance. I took a marketing seminar and learned never have items laid out like a yard sale for any professional sale. Bring in baskets, chains to hang items on, have fresh flowers on the table, a bowl of Hershey's Kisses. Look at pictures of the quilt booths at most quilt shows. Which ones do you think gather more traffic?