Embellishing "Broderie Anglais" on Royal Icing Cookies is fairly simple as seen in this YouTube video:
I have created a home class on making and decorating cookies with Royal Icing, if you're interested (and are in this area of northeastern CT) let me know. My in-your-home classes are a two hours long, $15 per person + ingredients, supplies and tools, and groups of 4 or more, only $10 each, + supplies and tools.
This first class involves baking and basic decorating. A second class is for advanced decorating.