I guess I don’t know how this works. For example: how do you determine where the 8-circles go. Oh, I see, three of them rest on each other at the top. But what about the 8 that intersects with the other 8 to form the leaf? What’s going on there? It looks like it’s bisected by the pink rectangle but not by the green and the circumference doesn’t rest on any of the lines. Do you just move it along the pink line until you’re happy with the way the leaf looks?
And what’s going on with 13 there? Is it supposed to define the height of the apple? If so, why is it a little taller than the height-through-center? Maybe it’s the guide by which to align the 1, 2, 3, 5 and 8-circles around the… and where did those two blue lines come from?
I get where the proportions come from but I’m dumb about this application. But this picture of the Laon Cathedral and this article about modern logo designs that use the ratio makes sense.
Again, I’m dumb about this and open to explanation.
UPDATE: And because there’s no source listed, I can’t email the person that’s making this stuff up.