My 7 yr old daughter decided she wanted a hula girl party for her 7th birthday with her friends. So we went back and forth with a few design ideas and then she decided on a waterfall cake with palm trees. This cake is a 6″ and 8″. It is iced in butter cream. The top palm trees are a fondant/gumpaste blend. The surf board is gumpaste. The other flowers and palm trees are fondant. For the waterfall, I first iced the cakes green. Then I roughly iced the waterfall in a light blue icing. I then topped the blue icing with some piping gel tinted blue. After that the other accents were added to hide the edges a bit.