This was a nice little model to cut my teeth on - a simple box shape with a recessed roof. I had some difficulty in calculating the correct scale to print the cardstock for 28mm miniatures, but working on the aim of achieving a door height of 40mm or so, I eventually deduced that I needed to print at 150% of the original.
I fixed each side and roof of the building to 5mm black foamboard, with rabbeted joints on the sides and with the recessed door simply glued to more foamboard and fixed behind the doorway cutout. The roof was glued onto supports 10mm from the top of the building.
I now have a solid and sturdy building after a couple of hours' work and I'm very pleased with my results. I will be buying more Twilight Street buildings in the future.