In a perfect world the scrap
pieces from one star plate triangle wall should fit together for the
next triangle.
I think maybe Lucy carried
off one of the pieces from the second triangle, but instead of cutting
a new replacement piece we decided to overlap the ill fitting pieces.
The overlapping seems to make
the wall more secure and still looks acceptable.
Mark,
You should consider rebuilding the upward facing panels with overlapping planks (lapstrake) so rainwater will run off properly and moisture won't gather in the seams between the planks.
With the planks like this you might end up with a non waterproof building and the walls would start rotting at the seams