I enjoy working on illusions using moirè. You can see example at my Facebook page: https://www.facebook.com/patternnerd/. I'm considering doing an occassional newsletter. If you want to sign up for my list you can ask questions or let me know what you'd like to see.
I'm currently running a giveaway. If you sign up for a free Pattern Nerd account you'll be entered in a Sweepstakes for a copy of Filter Forge 9 Professional.