Hi. I want to do a second review to cover everything.

Superimposed Lines.

I see no wobbling, nor fraying on 2 sides. As you practice the fraying on the end will reduce.

Ghosted lines.

Good job on this one. No wobbling or arcing. Occasional missing the mark (while can be frustrating) is acceptable. I suggest you do warm ups on this to avoid some frustration in the later lessons.

Ghosted planes.

While they mostly look good, some of the lines start from nowhere and there is an increase in your lines that fall short. This suggests you started to rush things, which is common due to quantity of the work. Take as much as time you need.

Table of ellipses.

Ellipses are drawn smoothly and confidently. Good job!.

The ideal is to draw the ellipses in 2 passes, 3 passes is also acceptable, however I see that some ellipses are drawn more. As you practice the gaps between the passes of the ellipses will shrink.

Ellipses in planes

Each pass of the ellipses are so different It seems to me that you are thinking as you draw. Take your time, ghost the ellipses as many times as you need until you are confident in your ellipse. Remember that even ellipses are more important than touching all the sides.

Funnels

Ellipses are good, good job. During warm ups try to get the degree of your ellipses to increase as you move outwards from the center - keeping the middle one at a low degree (very narrow), and towards the outside, much more circular. This was optional so it's not a problem that you didn't do it here. (I suggest always doing the optional stuff if you aren't already struggling with the non optional part)

Plotted perspective.

Not much to say, all according to the rules. Good job.

Rough perspectives

Your second attempt at doing it looks good.

Rotated boxes

You did good when drawing it big. Drawing big really helps when dealing with complex spatial problems. You also did a good job drawing through your boxes.

However you should have kept the gaps between the boxes narrower, especially the ones towards the corners. Keeping the gaps narrow and consistent really helps with inferring information about neighboring boxes rotation and proportion.

The initial axes should be longer. Your axes can fit inside the middle box. https://drawabox.com/lesson/1/21/step3

https://imgur.com/a/S1xucIb

Adding hatching is optional but if you want to add it you need to treat it like any other line you would draw for these lessons and plan it, ghost it, and draw with confidence.

This is a very hard exercise and the mistakes are expected. Just keep these in mind the next time you tackle this

Organic perspective

Your foreshortening is too dramatic. In this exercise, you should employ a shallower foreshortening, meaning the vanishing point should be farther.

Some box's parallel edges are diverging as they are moving away from the viewer instead of converging. Take your time to ponder on where the vanishing point should be before drawing each line. You will have plenty of time to worry about this in the 250 box challenge.

Overall this was a really solid submission. You are almost ready to tackle the 250 box challenge but let's just fix that ellipses in planes.

I don't have the eye yet for nuanced comments on most of this, but I'm curious how you went at the rough perspective exercises. My understanding of the exercise is that once you've built your boxes, you're to trace the edges of those boxes back to the horizon and see where they land. What you've done is the opposite: tracing rays from the vanishing point to the outside corners to see how those edges diverge. It does give you similar informaion, but I suspect in an official critique they'd have you redo that particular assignment.