Very nice work! You're knocking it out of the park in a number of ways:

  • Your ellipses are generally smooth and confidently drawn so they maintain nice, even shapes (a bit more hesitant in the boxes, but still pretty good - just keep an eye on it)

  • You've included a great deal of variation in terms of foreshortening, and I'm very happy to see that you're maintaining consistency in the various ways foreshortening is manifested. That is to say, you do a great job of keeping the shift in degree and the shift in overall scale consistent, avoiding situations where one shifts more dramatically, and the other does not. As such, your cylinders don't read as being "off" at all.

  • You're doing an excellent job of checking your ellipses' alignments afterwards, to identify your mistakes (even the small ones) and learn/improve from them as you push forwards.

  • Your line extensions on your boxes and the cylinders within them show some excellent results. While they're not perfect (and I certainly don't expect them to be), their convergences show that you are definitely thinking a great deal about how those edges need to be oriented to maintain more consistent shared vanishing points. This carries over into the further line extensions of the ellipses as well, which are understandably not quite as consistent, but definitely trending in that direction.

  • The above point also means that your instincts and estimations in drawing boxes with faces that are proportionally square have improved and developed a great deal. After all, that's the purpose the line extensions serve - to allow you to check whether the ellipses' lines (minor axis, contact points) align to the box's own vanishing points. If they do, then the ellipse sitting inside a given plane would correctly represent a circle in 3D space, and the plane around it would represent a square in 3D space. The ability to estimate these proportional relationships by eye effectively is extremely useful especially as we get into lessons 6 and 7, and that is one of the major focuses of this challenge.

So! Fantastic work. I'll go ahead and mark this challenge as complete. Keep it up!