Share 'How do I paint the detail on the side of the cake?! (Pic. included)'

The wedding cake that I will be making is a replica of the cake that you see in the picture, that one is a small one, the one that I will be making is for 180 people ... The bride wants the white details on the cakes in gold ... I tried to make them with white chocolate in a chocolate mold and paint then in gold, they look beautiful but they dont curve to the shape of the cake, how do I make them…