To make the house look more ramshackle I used two different techniques. I painted the wooden slats I had made by putting grooves in the gingerbread all different shades of brown, and I added "wooden slats" or pieces of gingerbread that were thin and long. I also painted those in different colours. I put those on the house on different angles and tried to make it look like they were just holding the thing all together.
I also used more of those skinny pieces of flat, long thin gingerbread to put trim around all the rest of the windows. I painted these different colours as well.