Your work here is really something to be proud of, here. Across most of your vehicle drawings, you've demonstrated a degree of patience, control and specificity to every single action that must have taken ages. And it paid off in spades.

Now, to start, I'll admit that your cylinders in boxes weren't that great (it was mainly the boxes themselves - you definitely need to continue your practice of those freely rotated boxes to get the lines' convergences to maintain their consistency, but as you remarked yourself you're well aware of this). Your form intersections however do show a pretty solid grasp of the relationships between your forms - even with especially complex ones. You may however want to put some more focus on exercises like the organic forms with contour curves, specifically to improve your ability to wrap such contour lines along rounded surfaces. Here many of them come out a bit shallow.

Anyway, with those out of the way, you really knock it out of the park with your vehicle constructions. You take inordinate amounts of care with every single mark, planning them out precisely and ensuring that you know exactly what they're meant to accomplish before laying them down. You also showed your ability to explore these constructions both in simpler, bare-bones fashion (like your cheeky box truck and your tank, really perfecting the primary elements), as well as with immense amounts of detail (like the cars at the end). Not only did you pull them off well, you showed your ability to do it again and again without fail. I mean, maybe you had other drawings that didn't go super well in between, but with the amount of time that goes into these, I'm actually not entirely sure about that. Doing just this much work must have taken tens of hours, and frankly you have better things to do than to hide your perceived shame.

Now, not all your drawings were entirely perfect - there were two very specific ones that I felt didn't exhibit nearly as much of the strengths that the others did. One of them was your WWII jeep. What set it apart from the others was largely the fact that while there was still a considerable amount of planning, subdivision and layout that went behind it, it feels like there were many more elements that were approximated or guessed at where they didn't necessarily have to be. The roof for example was definitely somewhat sloppier, and you also had more of a tendency to apply form shading - that is, putting your "shadows" on the surfaces that were casting them, rather than having them projected onto surrounding forms. Remember, and I think I've mentioned this before, that form shading is where a surface is made light or dark based on its orientation relative to the light source. This is not what we're bothering to capture. Instead, we're focusing on the shadows the forms cast onto other forms and surfaces. So when looking at the headlamps of your jeep, you've made the sides solid black - when in fact, that is a property of their form shading, the fact that they're dark for having been facing away from the light source. We see something similar for the roof, and on the contraption along the front.

The other drawing that was not as successful was much for the same reasons, and it was the WWII airplane. Along with the points I mentioned above, a couple other things that stand out was the tendency to fill in things that had a local colour of black (like along the cockpit, and the antenna just behind it). Remember that we want to treat our objects as though they're a solid, flat white - we wouldn't try to capture things that are red, or green, or yellow with their faithful colour, so we don't give black objects any more special treatment either. Filled shapes are saved for cast shadows alone. Lastly, your tail fins - especially the one that is upright - didn't quite capture a sense of their thickness, and so they read more as being paper-thin.

Admittedly, your work along the propeller was really nice, and keep in mind that I'm gauging these particular drawings in comparison to what you've shown yourself capable of throughout the rest of the lesson, so they're actually not badly done and they have their own strengths as well.

Skipping onwards, I've got two things to mention about the dump truck, and they're both very minor. Firstly, the tire tread lines do feel a little sloppier than all the rest. Remember that when you're allowed to use a ruler everywhere else, it makes your freehand lines stand out that much more, so taking the time to execute them confidently, and ensuring that they start and end where they're meant to is critically important. Secondly - and this is more of a suggestion - there are ways in which we can convey a massive scale, and one of those is with foreshortening. For something like this, I might have ramped up the foreshortening a little more to really give it a sort of building-sized scale. With the foreshortening left a little shallower, such large objects can end up feeling more toy-sized.

The last thing I want to address are your last two cars, and frankly, by "address" I really mean "gush over". Your work here is unbelievable. Both vehicles present their own challenges, and you knocked both out of the park completely. With the sports car, the tendency for its profile to sit very low, and for its curves to be so fluidly streamlined makes it very easy to mess up and contradict its cohesive, purposefully designed sense of character. But frankly, I don't see any mistakes. The car is like a fucking knife blade, and it exudes speed and performance. Phenomenal.

The other one on the other hand gives a strong impression of solidity. I suspect that you might have a curve along the bottom of the side windows that perks up a little too much, but all things considered it's a very minor fault and it doesn't undermine the solidity of the construction. Your attention to detail - and the sheer quantity of detail you captured faithfully as form - is amazing, and the vehicle as a whole gives a strong impression of reliability and strong handling. I'm not sure if you've shown these to Sven, but I think if you showed them to him, he'd have an aneurysm.

So, with that, I mark this lesson and the entirety of this course as complete. You've done a phenomenal job, and have shown immense growth and improvement since you began. It's students like you who bring me immense pride, and the sense that maybe I'm not just a goblin on the internet tricking people, and maybe what I have to share is of some value after all.

You're welcome to tackle the 100 treasure chest challenge if you like (waveclaw and Shinra recently did, which actually surprised me), but it is entirely optional. You've earned your completion status, so congratulations.