Starting with your superimposed lines - these are looking straight and confident. You're taking the time to line your pen up with the starting point and overall it's a pretty well executed exercise. There were some confidence issues with your curved lines on the first page which cleared up on the second page. Next your ghosted lines and planes exhibit a good level of confidence, though I did notice a tendency on your ghosted planes to arc partway through your line in order to hit the endpoint, so make sure you work on not auto-correcting your course once you put your pen down.

Next your tables of ellipses are pretty well executed. Your ellipses definitely improve over the course of the two pages with a good range of degrees and sizes of ellipses packed in there nice and tightly. Your ellipses in planes are showing slightly more signs of hesitancy and, in some cases, wobbling. Make sure you're focusing on keeping you're maintaining confident linework above accuracy - if it's popping out of the plane slightly, that's fine, accuracy will build with practice. Finally, your funnels pick up a much better level of confidence with your alignment to the minor axis being pretty good, but slightly off to about the same amount each time. You may need to experiment with the angle at which you draw your ellipses to correct this misalignment.

You've done a great job keeping your horizontals parallel and verticals perpendicular to the horizon line on your rough perspective. As a result, your convergences aren't too far off the mark with most of them clustering around the vanishing point. Next, you've kept the gaps between your rotated boxes fairly consistent, though they could be a bit tighter, you've mostly kept your boxes together. You've managed a fair amount of rotation along the cardinal points of the axes whilst your diagonals got a little more confused. That said, these last two exercises are intended as introductions to new kinds of spatial concepts with no expectation of mastery from students.

Finally, you've done a pretty good job varying up the size of your boxes in your organic perspective, conveying a sense of depth in each 3D scene. They do get a little bit sparse here and there but it's good to see a little bit of experimentation with overlapping your boxes. Naturally there are divergence issues present in your boxes that you can work through in your box challenge.