It’s coming along! We got the second floor walls up and dowels placed. Missing from the picture/structure are the square support poles that will go in each corner. The walls on the second floor are somewhat floating with very little support (they are attached to the floor with screws from underneath). Typically, this wouldn’t be enough to keep them secure, but since the third floor will be above, the dowels at the top of these walls will keep the walls inline and stable.
I’ve labeled the pictures below to help you visualize what is what.
Next up, the third floor!