Hello! Here is my critique. Let me know if I say anything wrong or unclear!

• Lines Section

For the Superimposed Lines exercise, your lines are neat and mostly confident, with a small amount of wobbliness that appears to improve significantly throughout the lesson. Remember that wobbliness comes from a lack of confidence when applying strokes, however you seem to have understood this concept throughout the entire lesson. A couple of the lines also arc a little, which often stems from not using the shoulder pivot to draw. However, it can also happen as a natural tendency, for which I suggest consciously arcing in the opposite direction that you tend to arc in. This way, the line being drawn may be leveled out as a straight line, and eventually your brain may associate this opposite arcing motion with drawing a straight line.

For the Ghosted Lines exercise, your lines remain neat and mostly confident. There are some minor instances where you appear to have slowed down your pen before reaching the end point of a line, resulting in the pen wavering towards this end. The written content for this lesson mentions that many struggle with overshooting their lines, and in compensation slow down (or rather, hesistate) before they reach the end point of the line. Although you don't seem to have any trouble with overshooting in this exercise, it may be worth mentioning that a way to avoid wavering at the end is to "Try lifting your pen off the page the second you hit that end point", as the written content suggests as a solution to overshooting. But again, instances of wavering in your lines is very minor. Additioanlly, you seemed to have improved considerably with arcing lines, so well done there! Your accuracy is very good, and will continue to improve with time and practice— just remember that confidence should be prioritized over accuracy.

• Ellipses Section

On the Ghosted Planes and Ellipses in Planes exercises, your lines remained neat and continued to improve in terms of wobbliness. The ellipses appear smooth and confident and are drawn through two or three times, so well done there! You also seem to have done a good job with keeping them within the boundaries of the planes.

For the Table of Ellipses exercise, you do a great job with drawing various sizes and degrees of ellipses, along with maintaining confident strokes! On another note, many of the ellipses appear to overlap the boundaries of the frames a bit. I would suggest practicing ghosting through an ellipse several times before putting it down on paper, so that you can become more familiar (and thus confident) with the particular type of ellipse you want to draw. Doing so may help improve your confidence along with accuracy as you become more comfortable with drawing ellipses.

On the Funnels exercise, for the most part the ellipses appear to be split into two symettrical halves by the central minor axis (the line cutting through the horizontal middle of the funnel). However, if you had not done so, I would recommend using a ruler or starightedge when drawing the minor (and major) axis in the funnels. The written content for this exercise mentions that doing so is important since "we want to focus on one thing at a time". Additionally, some of your ellipses appear to overlap the boundaries of the funnels, so I would suggest doing the same as for the Table of Ellipses exercise, or for drawing any ellipse (ghosting several times through an ellipse before drawing it). I noticed you wrote question marks near a funnel that seems to have slanting ellipses rather than rounded ones. Remember that the minor (and major) axis is meant to cut an ellipse into two symmetrical halves, meaning that if a perfect circle were to be slanted somewhat, the minor axis would no longer cut it evenly. This is also explained briefly in the written content for this exercise: https://drawabox.com/lesson/1/13/notaligned.

• Boxes Section

On the Plotted Perspective exercise, although you make a note on the first frame about smudginess, your boxes are very neat and their depth lines follow through to the vanishing points correctly, so well done there! One of your boxes on the third frame appears distorted simply because it's placed past the vanishing point on the right. The concept of distortion is explained briefly in the written content here: https://drawabox.com/lesson/1/13/notaligned and also in good detail here: https://drawabox.com/lesson/G3SI84C/7/distortion. Additionally, it may also be worth mentioning that the boxes in the first frame appear to have much heavier line weight than in the rest of the frames. The written content for the 250 Box Challenge mentions that line weight only needs to be subtle in order to convey the solidity of an object: https://drawabox.com/lesson/250boxes/1/lineweight.

For the Rough Perspective exercise, your lines appear a bit wobbly, but from what I've seen on other submissions (including mine), this is fairly normal for this exercise. A likely cause may be the attempt to make each width line parallel to the horizon and each length line perpendicular to the horizon, as the written content for this exercise asks. It's worth remembering that this particular exercise is done in 1 point perspective, meaning that two of the vanishing points are so far off the page that the converging lines for one vanishing point effectively become parallel to one another. Additionally, while your convergences are quite off, mistakes made while estimating perspective are normal, and doing so will improve with time and practice as well as during the 250 Box Challenge.

In the Rotated Boxes exercise, you did a great job with keeping your work neat and easy to interpret, so well done there! I would suggest making your work slightly larger so that the full extent of the page can be used. Additionally, don't be afraid to make your work large enough to touch or engulf the squares drawn on each end of the axes. Remember that these squares are there to unconsciously remind you of what a 180° rotation looks like (which in this case is effecitvely what you are trying to achieve with the rotating boxes). However, the written content also mentions that it's alright if you place these squares too far out from the rest of your work. Also, I would suggest keeping the gaps between the rotating boxes consistent in order to make estimating the placement of neighboring boxes in 3D space as efficient as possible. This is also explained briefly in the written content for this exercise: https://drawabox.com/lesson/1/16/guessing. Additionally, some of the boxes don't appear to actually be rotating (for example, the two boxes in the center left), meaning that their convergences follow to the same vanishing point(s), instead of different ones. The written content for this exercise briefly explains this as well: https://drawabox.com/lesson/1/16/notrotating.

Finally, for the Organic Perspective exercise, your lines are neat, fluid, and confident. You also seem to do a fairly good job with adding lineweight, although I would suggest only applying it to the larger boxes closest to the viewer, so that the illusion of depth can be achieved more effectively. Additionally, some of your lines appear to diverge rather than converge, when facing away from the viewer. This mistake is also addressed in the written content for the 250 Box Challenge. Doing the challenge may help you improve considerably with estimating perspective.