More walls were built, and the third floor was added.
I primed it and laid down paper flooring. I continued to apply wallpaper to the new walls. Be mindful of your wallpaper patterns and the rooms they belong to, so you don’t accidentally use the wrong pattern on a wall. Pay attention to how each wall defines a room, ensuring that your patterns remain consistent for each space. Before wallpapering and gluing, dry fit each new wall to see which room it faces.