Bake the gingerbread as you would usually do, once they are cool to touch, decorate them. You will need a super fine icing sugar to mix the base paste. Add a tiny bit of water or lemon juice, and mix well until you have a paste (not too runny, not too thick). Cover the gingerbread with the base. For the coloured biccies, add some food colouring (for example, Dr Oetker gel colours) to the icing paste.
Once the icing is set, take a brush and draw your designs on the surface. I used Queen Natural extracts (drop vials) and Dr Oetker food colouring gels.
As I finished decorating the first two gingerbread men, Eddie pointed to the mummy and asked "What happened to him?" I replied "It's a mummy". "And that's a Daddy", said my little man, pointing to the skeleton.