Exterior chimney, paperclay stone, 1

The stonework on the outside was difficult because there was so darned much surface to cover, because I had chosen a style of stone to imitate that I don't usually do, because the chimney is in two pieces (so that the roof can lift off) and I wanted that to be as unnoticeable as possible, and because the massive structure narrows as it goes higher, meaning there's almost nowhere on the whole chimney where I felt like I was doing something I'd done before—so little repetition made the whole thing a high-wire act.

I'd say "I don't recommend this to others," but hey, we all like the big challenges that look really neat when they're done, so I do recommend it!

Just make sure you do work like this on a day when you're feeling patient, and you know there won't be a lot of interruptions.