how do u make these cake seperators like this cake? http://weddings.theknot.com/Real-Weddings/72082/detailview.aspx?id=72082&type=3&wedding+details=cake

I have done them like that before. Solid Styrofoam. Add a cake board to the bottom (so it's food safe and the dowels don't penetrate it) and cover with fondant or ribbon (as this pic)