Wait...if you have the project with the tilesets then why didn't you use the tilesets/copy the format of the houses from the project?
Anyway, of all the tilesets that you posted, you didn't post one crucial Mack tileset-
TileC, that contained the bue roof you were searching for:
How to use:
-Create a house as you usually would (TileA3)
-Create an extension of the house, eg: --------------------------
l l
l part A l
l l
---------- ----------
l l
l l -------->Extension
l l
-------
-Place roof over the entire section of part A
-As for the 'small roofs' just place them over the roof tile. They're TileCs.
-As for the church, follow the ^ steps just that put the bell tower as events over the roof.
That's about it. Good luck.