Last night I spent hours trying to illustrate the bicycle from my travel poster and it was still turning out rather dodgy (sorry, I've been watching Australian television again). Between that and being tired, I just set it aside and went to bed. Maybe there's something to be said for working out your problems in your sleep because when I woke up I knew that I'd been making it way too complicated for myself. The solution was too obvious. Instead of cutting out the counterspaces, like I had been doing, why didn't I just draw the actual object? Seems obvious in retrospect...
And so, in about a half hour flat, I redid the entire wheel that had taken me 5 hours to do yesterday. It looks so much better though! Sometimes starting over is exactly the right method.