Hi! Congrats on finishing Lesson 1! Here's my critique on your work:

Lines

I think you did a good job on your superimposed lines exercise. Fraying is indeed noticeable on your superimposed lines, but it's nothing to worry about since it's only present on one end of the lines, not on both ends. Keep practicing on it, and I'm sure you'll be able to prevent fraying on both sides! One thing about your lines that I would like to point out is that some of your lines (both the ghosted lines & planes and boxes sections) are wobbly. It's either because you prioritize accuracy over confidence (which you shouldn't do - focus on confidence rather than accuracy) or you're not used to drawing from your shoulder yet. I advise you work on making those lines more confident during your warm-ups.

Ellipses

You did a great job of keeping most of your ellipses touch the 4 edges of your planes on your ellipses in planes exercise. For your table of ellipses exercise, I see that you tried to make your ellipses fit in the given space, which is a good thing. Your minor axes cut some of your ellipses into two symmetrical halves in your funnels exercise, which I also think is a good thing. I believe that you'll be able to make your minor axes cut all of your ellipses into two symmetrical halves as you progress through this course, so don't worry too much about it for now. I do want to mention my main concern regarding your ellipses: your ellipses aren't smooth. The wobbliness of some of your ellipses are noticeable. Although I commended you on making your ellipses touch the edges in the ellipses in planes and table of ellipses exercises, it seems that the confidence of your ellipses is sacrificed for it, or it's just that you haven't gotten used to drawing with your shoulder yet. Same with your lines, I advise you to work on making your ellipses smooth and confident.

Boxes

For your plotted perspective exercise, you did excellent in making your boxes fall between the two vanishing points. I would like to point out that some of your vertical lines aren't perpendicular to the horizon line, but it isn't really a major concern. You also did a good job on your rough perspective exercise. You managed to make your horizontal lines parallel to the horizon line. I have nothing much to say about your rotated boxes and organic perspective exercises, considering that these exercises are difficult. Overall, I think you did a good job on the boxes section!

Before I end my critique, I want to address a major concern regarding your work. I noticed that you didn't fully commit to some of your marks. I observed that there are lines in which you drew once or twice over the initial mark. There's also a case in which you ignore your "wrong marks" and drawing in the "correct marks" in hopes of making the form appear "correct". This ruins the illusion of 3D form. I advise that you fully commit to your marks, even if you think that mark was unintentional or a mistake. Since there's no way for you to erase your marks, drawing over them once or twice just to make them look "right" or trying to correct these "wrong marks" by drawing "correct ones" ruins the illusion of 3D form and makes your drawing appear unappealing (except if you're adding line weight, which requires you to draw over the mark). Fully commiting to your marks also forces you to face your mistakes head-on and get over with these mistakes, which is an essential part of learning.

In general, you did a pretty good job, aside from the fact that your lines & ellipses are wobbly and you didn't fully commit to your initial marks. I think you're ready to tackle the 250 boxes challenge, but please keep in mind my major criticisms about your work. Remember to take your time and avoid grinding the exercises. I wish you good luck on tackling the 250 boxes challenge and future lessons & challenges!