This is what I've been working on for my colored-pencil class. It's still not done. The orb and plant are on top of a brick pillar. I won't show much of that--just one row of bricks and the top concrete slab. But I couldn't wait to post what I've been doing.
So far, it's taken about 16 hours of work. (As usual, clicking on it makes it bigger and shows detail.)