really nice texturing mate, I love the stone work and the windows
A few things I think might improve it a little...
The ridge of the roof. You wouldnt see the flat tiles go all the way up to the very top. There is usualy a sort of spine
like this at the top, or a more curved tile
like this
The roof could use some subtle variations in hue and saturation between the tiles
Where the chimney intersects with the extended roof doesnt look very natural. I would have the planks cut away to accomodate it. Or have some more dirt or moss that would collect at that intersection and run down the roof
Also I think the top of the chimney would be a lot more black and sooty than that