Make sure you have placed the icing evenly. Whatever you want to put on top or at its sides, make sure that the icing is even and smooth, as your decorations will always be nice and beautiful if it is evenly iced. You can use parchment paper to smooth it out as well.
When you are applying butter icing or frosting, the best cake decorating technique is to put a large dollop in the centre on the top. You then need to spread out the icing with a spatula (I find that a metal spatula gives a smoother effect and is easier to use than a plastic spatula) towards the edge of the cake.
When the top is totally covered and looks smooth, you need to ice the sides. This can be slightly trickier – but with this top cake decorating technique, you will find it easier. Using a dollop again, stand the spatula straight up against the side of the cake. I find it easier to spin the cake rather than move the spatula.
Now you have your cake iced, it is time to make it look professional and beautiful. The smother the icing is, the better the overall look of the cake.