So here are my photos of the finished Pickle head, finally! Features LED eyes which you can see switched on in the last shot. The face is airbrushed Antron Fleece.

The foam base originally had a moving jaw, but after covering it, it stopped working. I think the problem is that I had to stiffen the back of the jaw with hot-glue so the jawset didn't cause it to sag, and as a result the elastic no longer hugs my chin. I never thought that Pickle would end up being a static-jaw suit, but it's not the end of the world, she's not a particularly talkative character anyway. And I can still prop the jaw at different angles to give her different expressions. :3