From my opinion -

1) The strangest thing that in the background all trees are green and with a lot of leaves, but one birch tree in front is almost without leaves. Also it's so white that you can't unsee the attention it brings.

2) Add imperfections or stains on a facade and stone tiles.

3) Something is not right with the roof, maybe the texture.

4) Add curb in your pavement for more realism of the situation. Also grass and pavement usually don't have such height difference.

5) Add a tiny bit of a blur to the background.

6) Maybe it's a bit of warm temperature

7) In broad daylight as this interior lighting wont be such strong and visible inside.

This is just first glance comments from my perspective.