Ice and stack cakes. Level, fill and stack 6 inch cakes for a 6 inch high cake on same size cake circle; repeat for 8 inch cakes for a 6 inch high cake on foil-wrapped cake circle.
Place 6 inch cake on turntable. Using 13 inch spatula, ice cake, leaving spatula marks in icing, on sides and top of cake. Ice 8 inch cake. Prepare cake for stacked construction. Stack 6 inch cake on top of 8 inch cake.
Using decorating bag with 3/4 inch tip cut off, pipe mound of stiff icing on top of and down front of 6 inch cake for base of flowers.