Confidently construct three types of advanced cake structures, each with two elegant design variations, using cake star Marina Sousa's inspiring decorating techniques. First, work with foam risers and simple materials to stack cakes for a floating-tier effect. Then, conceal your foam risers with gorgeous molded latticework and borders. Build center-pole structures where the support is disguised with green fondant "stems" that appear to pass through your top tier and bloom into a brilliant bouquet. Make a four-tiered cake structure adorned with delicate fondant stringwork and a cantilever-style structure accented with curtains of isomalt beads. Take your cakes to new heights of design and demand with well-built structures and elegant embellishments.