Don't forget to consider decorating the wedding cake platter! You may wish to simply lay rose petals around the bottom, such as what is seen in this picture. You could also cover it in more fresh flowers, placed all the way around the bottom edge of the wedding cake. A third option would be to drape fabric matching your theme colors, covering any exposed parts of the platter. Or, you could place objects that reflect your theme - for example, cover the platter in seashells for a beach wedding.
Of course if your platter is beautiful, you may not want to cover it at all!

