The kit I've been working on (Branch Line Trains Feed Store) came with a tar paper roof. This is basically wide strips of black construction paper, that I'm to overlap on the roof in order to cover it. I've dry fit a few strips, just to see how it will look, and I'm a bit disappointed. I've spent a lot of time painting and weathering this kit, and the roof looks pretty generic. What can I do to spice it up a little? I thought about running some glossy black paint down the seam lines to make it look more realistic, but that may not be enough. Any thoughts?