From the photos. The key to the good design, is not only does everything fit off the roof to hold the structure together (the center tabs of the roof fitting in the slots of the walls), but the foundation piece (picture two) reinforces the whole structure.
Basic rules:
1) Put the acrylic pieces in first. It is a tight fit and you may need to rub a slight mold line off, but not too much. You don't need glue. The acrylic comes in several colors when you order. I picked green .
2) Rubber bands are for holding the doors on. The doors are just an add to the surface piece.
3) The walls are pre-primed and pre-masked (the brownish color on the pieces). Peel off what you like, level the rest for future painted. Be careful using a knife, you can damage the primer.
