Nice, lamp, beautiful result.
Artist by accident? Probably more common than we know. I mean if people suddenly declare you an artistic genius, throw cash at you, and invite you to party with the rich & horny, would you say it was an accident? Hell no, ride it for as long as you can.
There's nothing you can draw, nothing you can build, nothing you can see in the world, (when not doing drugs) that isn't influenced by Pi. Even if we can't visualize the connection, which is usually the case, it's there. It's the law.