For your superimposed lines, you did good at starting them from the same place but they frayed at the ends a lot. The other exercises are fine too except some of the vertical and horizontal lines of the boxes for the rough perspective exercise aren't parallel which they should be because it's 1 point perspective. In the rotated boxes excercise you were able to successfully rotate the boxes through a wide range of motion and in the organic perspective exercise a few of the boxes look a little warped but overall they were fine as well.