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I am decorating a wedding cake for my sister in a few weeks. She wants a tiered cake with oval cakes, but I have only ever used pillars and plates and stacked cakes. This will be my 12th wedding and I am looking for advice for how to build this cake! Hers will be 4 cakes. Do I just use cardboard between the layers and some plastic dowels? I am offsetting the cakes and turning them so they are like a curved staircase. Any advice so it doesn't fall down would be greatly appreciated! THANK YOU!