These are quite spectacular pieces of work by our 4th graders! We found our houses on Google Earth and printed out a color copy that we then gridded to match our 12x18 paper. We drew our houses in pencil, looking especially at details of texture and trim. Then we used fine calligraphy pens to go over our pencil lines carefully and when the ink dried, we erased out the pencil lines. Color was added with watercolor or colored pencil or soft pastel.