I signed up myself and I've been massively happy with the work I've done as a part of it! I've worked like this a little in the past but seeing how someone else does it helps immensely and it's helped me loosen up a lot with the early parts of my work - learning that loose is good for a more inspirational design process.
Here's where I've got to thus far - I still have to get to the final detailing render pass (usually my least favourite part because it takes SO long!)
I also managed to do a 3 hours or so self portrait from a mirror back on November 1st. Weird, cause I almost don't look like me pulling that face. It was a great painting exercise though - so much colour variation on the face!