Step 1: What You'll Need
Step 2: Key to Marbling Icing Success
The basic idea is that if you drag the tip of a butter knife through the surface of your icing, letting the knife go approximately an inch deep, you want the surface of the icing to smoothe over again in approximately 10 seconds. If it takes longer, the icing is too thick. Slowly add more water. If your icing surface smoothes over in less than 5-10 seconds, it is too runny. Mix your icing longer or slowly add more sifted icing sugar (confectioner's sugar) to thicken it.
Step 3: Outlining and Flooding the Cookie
Here is a video to show you how to outline and flood a cookie with icing:
Step 4: 2nd Layer of Icing
*Note ~ the spider was piped later.