At least 2 days in advance: Make color flow monogram. Enlarge letter patterns to desired size using copy machine. Outline with tip 2 and flow in using cut parchment bag. Make extras to allow for breakage and let dry for 2 days. Make 90 color flow dots on waxed paper using tip 2 and thinned color flow; let dry.
Tint fondant blue. Wrap foamcore board with foil and brush with piping gel.
Cover with fondant; smooth with Fondant Smoother. Prepare 1-layer cake for rolled fondant .
Cover with fondant and smooth with Fondant Smoother. Position cake; pipe tip 5 bead bottom border with buttercream. Carefully remove monogram and dots from waxed paper; attach with tip 2 and thinned color flow. Position floral decorations.