Cakes are my hobby and I usually make them as birthday presents for friends and family. This 70's Disco cake was made for two friends' 30th birthday celebrations, the theme of which was the 70's.
It was a normal sponge with strawberry jam and buttercream filling. I used sugar paste to make the glitter balls, as it is lighter and sets harder. The rest of the icing was your everyday rollout icing, dyed with food-coloring paste. I added lots of edible glitter and covered the board it sits on with a disco-type covering; this idea I got from the scene setters who decorated the room.