Starting with your cylinders around arbitrary minor axes, my immediate concern based on your linework, is that you rushed when going through this section. This led me to check when your previous lesson was marked as complete - which appears to have been exactly 2 weeks prior to your submitting of this work. This unfortunately does not reflect well upon you, especially in terms of the primary responsibility of students of this course being to complete the work to the best of your current ability. Rushing makes that impossible.

The main issue with your linework is that you don't appear to be consistently using the ghosting method - that is, you're not investing your time into the planning and preparation phases to identify the specific nature of the mark you wish to make, nor taking adequate time to get used to the motion it requires of you. Instead, most of that time appears to be shifted to the execution phase, which results in you hesitating when you make the mark, when you should be executing it confidently. This is a pretty common outcome when students drift away from applying the ghosting method. You will want to review the notes on that approach, and be sure to apply it to all your freehanded mark. Straight lines, curved lines, ellipses, etc. In addition to this, you don't appear to be consistently drawing through your ellipses two full times, which is similarly required of all the ellipses we freehand here.

Additionally, when drawing the minor axes of each ellipse after having drawn the cylinder, have it cut through the entire ellipse - don't limit yourself to such short lines, to help make the outcome of that analysis more obvious.

Lastly (as far as this part of the challenge goes), be sure not to draw any of your cylinders with side edges that are parallel on the page. I'm seeing this on occasion (like 117, 118, 49, 53, 46, etc.) and while it's not so prevalent as to be a major issue, it is something I explain as something to avoid here in the notes.

Continuing onto your cylinders in boxes, your linework here is considerably better. I'm seeing a lot more patience and care, which makes me wonder if the nature of the exercise (being more obviously demanding) resulted in you giving it more of your time.

This exercise is really all about helping develop students' understanding of how to construct boxes which feature two opposite faces which are proportionally square, regardless of how the form is oriented in space. We do this not by memorizing every possible configuration, but rather by continuing to develop your subconscious understanding of space through repetition, and through analysis (by way of the line extensions).

Where the box challenge's line extensions helped to develop a stronger sense of how to achieve more consistent convergences in our lines, here we add three more lines for each ellipse: the minor axis, and the two contact point lines. In checking how far off these are from converging towards the box's own vanishing points, we can see how far off we were from having the ellipse represent a circle in 3D space, and in turn how far off we were from having the plane that encloses it from representing a square.

Unfortunately, while your linework is considerably improved, there are some notable issues in how you've applied the line extensions - and this has unfortunately resulted in you getting a lot less from the exercise than you could have. If we look closely at the line extensions you've drawn, your blue lines are correct. You're extending the 4 edges of the box that converge in that direction, and you're extending the contact point lines for that direction as well, one for each ellipse.

For the red and green lines however, you are only extending the edges of the box, and you are entirely skipping both the other contact point line, and the minor axis, for each ellipse. As explained in the instructions, the line extensions must include two contact point lines and one minor axis line for each ellipse, resulting in a total of 6 lines from the ellipses, and 12 lines from the boxes.

In neglecting to do this correctly, the actual analysis we can perform on our boxes/cylinders cannot provide us with enough information to functionally identify the major issues and adjust our approach accordingly for the next page. While you took much more care in this section with the lines you executed, it seems that you still rushed through the instructions.

Normally this would result in considerable revisions, but there are simply too many things here that point to your intent being to complete the work as quickly as possible, rather than to complete them to the best of your current ability. So, I will be asking you to complete this challenge again in its entirety. Beforehand however, I suggest you rewatch this video from Lesson 0, and that you review the instructions for the challenge in their entirety.