The next lesson in Drawing 101 was on two-point perspective.
First we set up a horizon line and two points on the outer ends. Then we used those reference poits to draw cubes with a mid- low- and high-horizon.
Then we worked from a variety of photos to learn how to turn those 'cubes' into buildings, maintaining the correct perspective. These were sketched.
Then there was a final photo from which to make a finished drawing.
I am satisfied with the exercises I did with one exception... the one NOT SHOWN. It was a photo of an interior on which I got one whole wall off kilter. No need to expose you to that!