I found this great tutorial on making my shingles look aged and thought I would give it a try. I haven't shingled any of my dollhouses because it freaks me out. I'm afraid that the end result won't be what I was hoping for, and that's a lot of work to mess up on. So I tried it on the smallest of my houses first. And I think it turned out to be exactly what I was looking for. And it was very easy to do. You can find the tutorial here.
I'm no longer afraid of shingling! Although, now the time factor intimidates me a little. This small house took the whole of a day to shingle. It did have a few tricky angles to shingle around though. My other houses don't have as many tricky spots for the square footage involved. Now I just need to build up the ambition to finish the other houses. Yea!
I still need to prop up the floor with a support so it doesn't sag.