Brain mechanics

This is by far the bestseller in my RedBubble store it’s very popular as a sticker. I’d been toying with the idea of a steampunk brain for a while and this was the result. Despite its success I’ve tried redrawing it several times in slightly different styles – this one was done by hand and I keep thinking it should have a more polished outline like vector art. Each time it goes in the electronic bin, maybe I ought to just let it lie…