Congrats on completing lesson 6! I'll do my best to give you useful feedback so that you can improve.

Starting with your form intersections, you've done a great job! Normally students still struggle at this stage with complex intersections like round-on-round/flat but your work demonstrates an understanding in all types of intersections. However, there are a few instances of intersections involving spheres which could be done better. To help your understanding I'll share this diagram along with this intersection pack made by optimus on discord and this guide I made on how to use paint 3D to make your own intersections in 3D space to increase your understanding.

Moving onto your object constructions, you've also done a great job here as well by demonstrating a great a mount of patience and care in each construction. This lesson is the first point at which we really focus on the concept of precision in our constructions. Up until this point, going through Lessons 3-5, we're primarily working in a reactive fashion. We'll put down masses, and where the next masses go depends on how large or small we ended up drawing the previous ones. There's no specific right and wrong, just directions in which we're moving which impact just how closely we matched the reference. You can think of it as a manner of constructing that works from inside out. Conversely, what we're doing here works outside in - everything is determined ahead of time, and as we build out the various aspects of our construction, we either do so correctly based on our intentions, or we miss the mark.

Precision is often conflated with accuracy, but they're actually two different things (at least insofar as I use the terms here). Where accuracy speaks to how close you were to executing the mark you intended to, precision actually has nothing to do with putting the mark down on the page. It's about the steps you take beforehand to declare those intentions.

So for example, if we look at the ghosting method, when going through the planning phase of a straight line, we can place a start/end point down. This increases the precision of our drawing, by declaring what we intend to do. From there the mark may miss those points, or it may nail them, it may overshoot, or whatever else - but prior to any of that, we have declared our intent, explaining our thought process, and in so doing, ensuring that we ourselves are acting on that clearly defined intent, rather than just putting marks down and then figuring things out as we go.

In our constructions here, we build up precision primarily through the use of the subdivisions. These allow us to meaningfully study the proportions of our intended object in two dimensions with an orthographic study, then apply those same proportions to the object in three dimensions. You have used subdivions and orthographic studies effectively so I won't go over how to use them. Instead I'll point out areas which you can improve on.

• First I noticed you constructed a lot of curved objects which is great, but failed to make them into a chain of small straight lines first before curving them. The reason we should turn them into a chain of straight lines first is so that we can get more precision on the exact position of the curve in 3D space which therefore allows us to construct it accurately. This is especially important in lesson 7 where we deal with cars which are incredibly vague and curvy.

• Actually that's pretty much the only thing I can find for you to improve on. Pretty much all of your errors got fixed by the time you got to the last object so there isn't a reason to point them out. You've kept the plans nice and simple and have replicated them perfectly onto the construction.

Overall this is a very good submission that shows a very good understanding the lesson. If you have any questions or are unsure about anything feel free to ask.

Good luck in the wheel challenge when/if you return!