My first demo scene | Feedback please?

Hello people! I have just made the first demo scene.
Do you have any suggestions for me how i can get it improved?

I have been adding as you can see a big house, trees, rocks, stump, wood (beside the door) but i get a strange feeling that’s dosent seem right. But i don’t know what i should been adding. So it won’t be too much. What do you feel that i should add at this scene?