The idea is to make the moon represent the amount of donations done so far with the moon waxing to its full glory when the campaign reaches its donation goal.
Although this didn’t push through, working on this was a real treat. Would have been a lot easier to do this today specially with modern prototyping softwares.
Ah, I remember when we used to design things like these for Facebook – way before they locked down the platform and restricted what you can show on your page. Scroll all the way down for the kickass thank you meme.