Things that I want to do better next time:
569) We spent over a thousand dollars attaching the last layer of wood. I passionately want to get the cost of materials for the shell to fall under $200. So this needs to be dramatically reduced or eliminated. Starting by looking at one wall: there are two poles holding up about 30 sticks. Each stick has two, rather expensive, screws holding it in place. I want to replace that with zero screws. Let the pressure of the dirt hold it in place. I do have a concern that in this case there could be bowing of the sticks - so I propose adding a pole in the middle to prevent that.
570) We could see between some of the sticks to see the billboard material on the other side. I think we should have placed smaller sticks between the bigger sticks to prevent this. Kinda like this image from the wofati article:
571) I want the wings to be about half the size they are now. Steeper. In this design they flare out a bit. In the next design I think they should not flare out at all.
572) Cut green wood in mid-spring and peel two narrow strips off then keep poles off of the ground. The rest of the bark should fall off.
573) Put dirt on when it is hot and dry
Any other ideas?