I would expect an outline of what methods you will be offering. I would want a supply list if you are not supplying the stuff to work with. Is a package of the samples we are working with available to purchase? Will I need my machine and other sewing stuff? How much will it cost and is it refundable if the I can't make it or the class is cancelled? Is it all day and will lunch be ordered in or do we pack a lunch (fridge/microwave)? Washrooms available and easy accesiblility for possible handicapped? Where is the location, (map) parking and the time of the workshop. Okay,that all I can come up with that I would want to know before doing a workshop.