There's a scene in Steven Spielberg's motion picture "Close Encounters Of The Third Kind" where Roy Neary struggles mightily to understand the alien imagery in his head. It's the same feeling you get when you have a word on the tip of your tongue, only with images you feel it more in your forehead, your gut, and in the back of your throat. The only place you don't feel it is in your hand, where it's supposed to be.
So work progresses, but I can't help, like Neary, to feel like I've missed some fundamental step. I even had a dream or vision about it the other day, but I don't know how to express it. Maybe the icon is simply too dark.