7. Then u select ur brush and drag it over the house, let it be 16units outside the wall. Rotate the texture 45° on the side so the texture follow the roof. Then copy to the otherside, rotate and fit to the house.
9. First add a chimney. Then make a door and two windows, u can also add wood on the corners and between the walls and roof. Add some grass under the house and build a stair. Then make a small "roof" over the door and if u want u can add a sign (for example "Hotel" like in this tutorial)
For additional details u can make two barrels and a pile with hay with the trianglemethod. Then copy that pile, make it a little bigger (ctrl+m and select scale), and then put it under the stairs with the same texture as the grass.
Small things like this make alot to the looks of the house.