This would be easy to do with 3 wide layers of fabric folded over. Not exactly in half for each layer staggering out where you fold them. Then sew at the top. Could do a 1.5 inch seam to slide the curtain rod through.
DIY Tutu Table Skirt - I would love something like this for the wedding but she said it took 50 yards of tulle and my tables would be much taller...not sure that will be in the budget. But how gorgeous would this be?