The 10 & 6" tiers are iced in buttercream. Tulips are made from gumpaste using the Wilton instructions from their gp flowers book. This is a design from an older Wilton yearbook. There is a mini 1/2 ball under the top bouquet of tulips. Some of the leaves are gumpaste - other piped in b'cream. Sorry for the poor quality of the pic :(