The house design below was the previous design. The reason why I replaced it is that I thought it failed to look like a net folding up to become a cuboid.
I want people to see it as a cuboid folding up. Focus only on the white square slabs (floor and walls) and refer to the smaller white model too. The room on the left has a a bright orange colour and a red door is because it is the kitchen and living room and the minifig master want his guests to be happy. The room on the right has a small strip of windows is because that is the bedroom and study room and the minifig master wants privacy. The door is grey so that the minifig master will not be distracted while doing his work.