Starting with your cylinders around arbitrary minor axes, while your first page of this was a bit of a stumble (cylinders 1, 4, and 5 all show signs that you were trying to force the vanishing point to infinity, which would allow you to draw your side edges as being parallel on the page - something that is noted as a mistake in these reminders), you generally pick up from there and improve over the set as a whole.

There are a couple things I want to call to your attention though:

• Make sure you're drawing through each and every ellipse you freehand in this course two full times. It's not at all uncommon for students to end up becoming a little complacent with this, so while their intent is to draw through the ellipse two full times, they might stop at one and a half. Looking at your ellipses, that is certainly the case with you, so be sure to be more attentive to the specific actions you're taking.

• Similarly, be sure to apply the ghosting method as explained back in Lesson 1, especially when it comes to the planning and preparation phases. While there aren't any major issues, there are some suggestions that you may not be taking all the steps you could be to consider the nature of the mark you wish to execute, and that your execution may be a touch hesitant. Your results are still pretty good, but it's my job to look beyond the surface level and identify any signs that the student may be growing a little complacent, and may need to review the related material.

Continuing onto your cylinders in boxes, your work here similarly started a touch rough (for example, on number 152 you end up extending some lines in the wrong direction, and on that page in general your boxes tend to maintain some very parallel lines that should be converging more). Similarly again however, these issues seem limited to only the beginning, and from there you handle the work quite well, aside from a couple additional hiccups (like 248, some of whose lines appear to be extended in the wrong direction as well - it's not great to see, but it doesn't appear to be a pattern, so it was likely just careless instead).

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.

In applying the line extensions correctly (for the most part) you've armed yourself with ample information on which to adjust your approach for the next set, helping you to gradually refine and train your instincts in this regard.

So! I'll go ahead and mark this challenge as complete.