Golden Ratio Sand Castle Mold - Work in Progress

This is my first attempt at a 3D model of any kind, inspired by the Thingiverse BuildACastle challenge. I'm not a "math person" by any means, but I've always been interested in the golden ratio; these models are an attempt to create a sand castle mold which creates little golden ratio sand castles!

First attempt was fairly awful, the cylinder shapes are accurate golden ratio numbers, but they aren't matched up right.

The second attempt (the wedges) I'm much happier with, but it's still no