Do you have plans or more pictures of the build?
I have an upgraded design with better nestboxes that I'm planning to fully document. Here's the previous design's structure (with a hint at the current nestbox set up, that I'll change): https://cdn.satellite.earth/fcc2bae4444cc1e8c68a549a5df554d0caa6dd5b98ce0c021132614ae58d8588.jpg