The use of light beams is nice, however when you look at the scene from a different angle, you would notice a random beam in the middle of nowhere, as seen in screenshot 2:
As a workaround, you could try inserting a custom night time Skybox, but with the TimeOfDay set to day time. Then replace the sun texture with the moon, lower the brightness, and add a SunRays effect, seen below:
I like the house! You could add some more detail to the windows and door like curtains. The snowman could use a smile. And try adding a different variety of trees like different sizes or different appearances.
Also, add some more detail to the chimney. Overall, you made an awesome build.