Date: 3/5/13 5:17 AM
Well, there are a lot of things you can use to make it stand up. Canvas, heavy interfacing like Decorbond, Soft 'n Stable ( a product similar to what's inside a Vera Bradley bag). I would cut the rectangle and pleat it, attach to the interfacing, sew the 2 short edges together, then cut the circle for the bottom. Remember circumference = 3.14 X diameter, then add seam allowances. The diameter should equal the diameter of the pleated piece you've sewn together. Yes, it looks like the top is finished with bias tape.
Singer 66-16. Singer 600e, Kenmore 158.1913 , Viking 1100, Brother 4000D, Brother Quattro, Bernina 930, White 634DE,
Babylock Evolve, 2 Featherweights ,Pfaff Creative Performance,Janome Coverpro 1000CPX