Advice is to cook the dough a little longer than suggested so it sets firmer. I had to re-bake mine for 3 mins to make it harder. Soft dough = caving in roof! I used the store bought royal icing mix, I just find it easier than using egg whites etc. We also want it to last for eating on Xmas Day. You can keep them for up to a week if wrapped in glad-wrap (cling film).
|The back (by mistake I cut out a door and window at the back too! So I covered the door with a tree).|