According to Ms. Yin, HBO is putting together a compilation of material from fans! They'll include artwork, music, crafts, and much more from fans of the show. Of course, there will be judges who'll decide what will be included. Submissions are due by March 28, 2015. If you're included in the book, you'll get a byline/credit and a free copy of the book. The post includes links to the rules.
Panzer says, "Mom, get the camera, while I make a costume!"
To read the post, tootle over to Game of Thrones Compendium