They should, because so many of the queens use your art for their facebook pages. Just curious, do they ask you before they use them? Have you ever approached logo? I think you should! Nothing to loose
I typically post links to the work on their Facebook walls or on Twitter, and I'm flattered if they use the art for their profile pics. I haven't approached Logo per se, but I know some folks at the RPDR production company have seen the work. It would be fabulous for this to be "official" fan art, but I try to have fun whatever form it takes!