It doesn't have a solid feel to it. The second floor's... floor is only a plate thick. The point at the top of the roof looks strange, and the square box layout of the house as a whole doesn't feel right. The fence seems far too large and ornate for the house itself. There should be some sort of walkway to the door, rather than a stretch of grass.
Don't be afraid to give yourself more space to make things feel right for the size of house you're going for, and make sure it has some definition to it. Make interior walls, rooms and hallways. Don't just place a few objects around the perimeter and call it a kitchen, etc.