Here are the step by step photos. I have to admit that the cog in the middle wasn't meant to be completely blank, but I accidentally cut it out without leaving any bits attached!
I drew around coins for the circles, then copied some details from cogs I found on Google images before painstakingly cut them out with a knife.
I thought about sticking a background behind but I quite like it left transparent.
I also made another ATC, though this one was just for fun. It's a cluster of cheeky seagulls drawn in waterproof ink and painted with watercolours.
The front seagull is raised up on a sticky bud.
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