So for this topper I used styrofoam but you can use the same technique for a real cake with edible image. ;)
I cut my styrofoam with a Hot wire using the template as my guide. https://www.facebook.com/verusca.walker#!/hotwirefoamfactory?fref=ts
I use a sand block to smoothe my styrofoam and cream shortening to stick my fondant.
And them I just cut the images from my template and glue it to the fondant with tylose glue. ;)
It is easy quick and incredible effective.
-- Verusca Walker https://www.facebook.com/verusca.walker