Easy Royal Icing Recipe. This includes a video tutorial which is a great resource if you're looking for cookie decorating for beginners. Learn how to decorate sugar cookies with royal icing at CookiesRoyale.com
How to avoid bubbles in royal icing when decorating cookies.
How to Decorate Cookies with Royal Icing
This is the site I used to make the Chiefs cookies. I found it was easier to use paint brushes (that I bought and washed just for this), instead of toothpicks to fill in the outlines, though.