As a general note, you don't absolutely have to use only your shoulder. Some elbow movement is allowed, but the driving motion should come from your shoulder. (And, no wrist)

• Lines: Decently confident, pretty good.

Superimposed lines: Decently confident, and I don't see double end fraying. I really don't have too much to say. Good job there!

Ghosted lines: So here, I see 2 main things. Firstly, I see some curved lines. This is not the same as the second issue, which is arcing. They are caused generally by lack of confident execution and just natural movement respectively. To solve them, you need to: Execute with confidence, and arc consciously in the opposite direction respectively.

Ghosted planes: I see a general improvement in your line quality here, so good job there! Not much curving lines anymore, but there's some arcing lines, so you might wanna work on that. Good that you seem to be prioritising confidence over accuracy, though. Also, you seem to be using a ballpoint, so try to ensure that ink flow remains consistent; the "+" seems to be lighter. Interesting that you have a dot in the center of some of your planes, though.

• Ellipses: Most of your ellipses are actually elliptical in shape, so good on you there! They do appear a little messy in general, though, so try to trust your ghosting a little more.

Table of ellipses: Good work. I think more effort could be put in to ensure that the ellipses are more squeezed together, touching the other ellipses, though. In addition, do take note that ellipses in a single part of a panel should follow the same degree of rotation.

Ellipses in planes: Mostly fine. But, do remember that you should prioritise making a clean ellipse first before having them touch all 4 sides of the plane. In some of your ellipses, I see some of your draw throughs warping to touch the sides. Don't do that, stick to your ghosting and trust in it.

Funnels: For the most part, your ellipses are aligned to the minor axis, so excellent job there. Aside from the general things I mentioned about the ellipses, I really don't see an issue here. Well done!

• Boxes: I think they're done decently. I see that you've refrained from the pitfall of making accurate lines over confident ones, so good job there. You've still made that mistake a little, but its far less compared to other's work, so great work!

Plotted perspective: Really, nothing much to say, except that you've made a mistake in hatching a box in the first panel. Good work!

Rough perspective: I will note that you shouldn't redo your lines. Even if the line is grossly incorrect in execution, treat it as though what you've plotted is correct, and base your other lines (correction lines, etc) off that. Otherwise, I think this is pretty good.

Rotated boxes: So, I think you can apply line weight to the top face of the boxes to make it clearer to viewers and yourself where the top box is (this also greatly helps in construction, I find). In terms of rotation, I don't think you've properly understood the idea behind rotating the boxes. The vps of each box needs to be varied, and so give the idea of turning. Aside from that, the corner boxes needs some work too. I highly recommend giving this a read: https://www.reddit.com/r/ArtFundamentals/comments/cqvxap/i_created_an_extra_rotated_boxes_guide_for_people/

Organic perspective: Decent, although I think you can push for the idea of bigger=closer better. You can do this by having the closest box be really, really, big. Other than that, do not redo your lines, as I explained earlier. Finally, box construction ain't perfect, but you'll get to know that well really soon.

Overall, a good submission. For the most part, your work is pretty good, but you stumble at some points. I think you should do a little more before moving on to the 250 boxes, as I'll explain in a moment.

Since your revisions were accepted and the site doesn't have a way to agree with replies yet, I'm posting this so that you can get official completion approval on the lesson!