Honestly, I'm extremely happy with your results, and I feel that overall you're demonstrating a considerable, solid, well developed grasp of the core principles of this course. I'm going to go through your drawings and we'll talk about any issues I see, but all in all you've done very well so I expect them to be minor.

Starting with your form intersections, just a few minor things:

• I noticed that when drawing your cylinders, you neglected to apply any foreshortening to them (in terms of the scale shift - you've got some degree shift there, so it was getting inconsistent as well). Remember that in 3D space, there will always be at least a little foreshortening.

• Also for your cylinders, you didn't draw through them consistently, and they tended to get elongated as a result. Drawing through our ellipses confidently helps keep them more evenly shaped.

• This cylinder-cylinder intersection was pretty tricky, and I'm not even 100% sure I got it right, but here's a quick correction attempt.

Despite the little nitpicks on your cylinders there, the cylinders in boxes are all looking pretty great, and you're doing a solid job of applying your error checking.

Moving onto your vehicle constructions, I'll just call out things of note, both good and bad.

For your tank, I really like how you handled the core construction - you established a lot of complex faces very effectively, and while there were a few gaps between edges there shouldn't have been (gaps can undermine the solidity of an overall form). Your ellipses, however, were definitely half-assed, primarily because you didn't opt to first build boxes/planes where you were planning on dropping them in. As a result, their positioning wasn't particularly precise.

Despite your lack of ellipse guide (I really can't stress enough how valuable those things are), you did a great job with the ellipses in the tank gun.

Moving onto your cab-over truck, I can claim more or less the same. The core construction is very solid, and you've built the structure of the cab very well. Your ellipses, however, are definitely your weakest point. I'm not going to dwell on this much more through the rest of the submission - it's totally expected for students to need more mileage to really get full control over their ellipses, and that is precisely the reason why we encourage the use of ellipse guides. Looking back at my critique of your wheels, I noted that your ellipses there were quite strong - so that suggests something changed in how you approached these.

Jumping down to the shelby mustang, you definitely messed up the proportions on the cab section - blocking it out with a simple box within the larger box container probably would have helped (it was also a bit skewed, getting taller as we slide further back in space), but the front of the car was very well done. The subtle forms around the headlights come off looking especially nice. Having drawn this car as many times as I have in the past though, I did notice you didn't quite drop the bumper low enough in the front - but alas, you did stick with the marks you'd committed to, and so I only noticed because of my familiarity with it.

The vespa was spectacular. Not only did you apply all the principles of building up your construction step by step, digging into greater complexity in each successive phase, but you really captured a great deal of nuance to the various rounded, smooth forms. These are features that are tricky in cars particularly - those specific organic curves that define a car's characteristics - and you really nailed them here, both in the seat and in the overall body.

Continuing on through, while there were a few proportional hiccups and the roof of the classic beetle came out a touch malformed, I'm really happy with the attention to detail throughout the rest of these constructions. Your ellipses definitely do improve, and while I generally prefer students not delve into ficticious vehicles, it's primarily because I expect them to pose too much of a challenge due to how the student would have to interpret and translate them from their original 2D source material. That said, you've done an amazing job with all three - the swordfish, the batmobile and the homer car (although I assume the batmobile probably had some three dimensional references you could have used.

Honestly, it's the swordfish and the homer that really show how well you've understood the core principles of the course. And so, I'll go ahead and mark this lesson as complete. Congratulations!