It's not easy to say what is "right" what is "typical". As I said, it seems like we have been fond of modernizing our homes the last 200 years.
Your 3 pictures show very nicely what happened to the walls: 3. picture; knot timber walls, 2. picture; the corners have been modernized, 1. picture; new planks outside the old. The same thing happened to color, windows, doors, porches, extensions......
My advice; make it the way you like it. Windows and doors mustn't be symmetrical (if they are, it's often some modernisation).
I'll show a couple of typical cottages.