Glad you like it 
I think the walls outside look flat because of the lighting, which isn’t proper yet as I mentioned. The plaster walls are also blown out and lose details outside, but are better visible inside. There is fireplace (picture 3) but it isn’t lit as I didn’t want to add artificial lighting yet. I want to achieve good resaults with only sunlight for now, after that I will do night scene with lit candels and fireplace.
Example of a lighting I want to achieve