My g/f volunteered me to make some round 60 inch lycra tableclothes for her niece. I didn't know the material was lycra when I said after the fact I could do this. I have done some research online and figure that I can do this but my problem is - that one is supposed to sew the elastic directly to the lycra and skip making a casing and threading the elastic through - but I don't know how long to cut the elastic to fit around the edge of the fabric? The niece bought the lycra dn elastic at Joanns - should I just divide the elastic into six equal pieces and then sew it? Any help would be appreciated.