The term 'APPLY ICING' is a job description that involves spreading icing on a cake or other baked goods. The TOP of the cake must be covered with the icing in order to create a smooth, even surface. This is usually done with a spatula or a pastry bag. The icing should be applied in thin layers, allowing each layer to dry before adding the next. Once all the layers are applied, the cake can be decorated with additional decorations such as sprinkles, fondant, or other edible decorations.