Jumping right in with your form intersections, there are two main issues I'm noticing, which I've marked out here.

• There are a number of places where you start your intersection lines at an arbitrary point, rather than where the silhouettes themselves actually meet.

• There are a number of places where you have your intersection line maintain a consistent trajectory even as it crosses one of the forms' edges. When we pass an edge, what we're doing is crossing from one surface to another, and so the trajectory of this intersection line will change to go in a different direction in order to follow this new surface. This means that when we hit that edge, the intersection line itself will stop and turn, resulting in a sharp corner.

At this stage in the course, it's still normal to have issues with the form intersections (they really are difficult), though the issues I generally see are related to moving from flat-on-flat intersections to flat-on-rounded and even moreso with round-on-round intersections. While that does play a role in what you're encountering, I think a lot of the difficulty you're encountering here has to do with keeping in mind that an intersection between occurs not between two forms (so in the sense of a box and a sphere, or a pyramid and a cylinder), but rather between the surfaces of those forms. So we might have a flat-on-flat intersection between two cylinders (since the ends of those cylinders are flat, and because the cylinder is flat lengthwise as well, only curving in one direction.

I will be assigning a couple pages of revisions for this exercise at the end of my critique to let you work on that a bit more, but I did want to share this diagram with you, as it may help you understand what I explained above.

Before I continue onto the rest of the lesson, I will mention that what I'm seeing here (as well as in your object constructions themselves), I think you do have a well developed understanding of 3D space, and that you're just running into a little bit of a road block with some specific element of the intersections themselves, and all we have to do is identify it and address it, and it should all make a lot more sense to you.

Moving onto your object constructions, your work here is by and large quite well done. I can clearly see you applying a wide variety of the concepts addressed in the notes, from very thorough uses of subdivision, to the use of chains of flat surfaces/straight edges as a scaffolding to apply more control to your curving structures. I really have just a few small things to call out:

• The earlier stages of construction, especially when we work in this sort of outside-in manner (as opposed to the inside-out approach we'd used in previous lessons where we always built on top of the structure from the previous step, allowing us to account for any small mistakes we might make in terms of proportion). Overall you handle this well, but I did notice in this last construction that the bounding box was definitely a bit skewed. This will happen - we're not perfect robots, and sometimes things go wrong, and all we can really do is invest lots of time towards ensuring that every decision we make when building out that initial box are being made consciously, rather than instinctually, especially when it comes to considering how our sets of parallel edges are to converge together. I will say however that while the box came out skewed, you still handled it well by treating it as though it was entirely correct.

• While I know this contradicts the demos themselves (this is due largely because the course has been developed over many years, and we're fighting an uphill battle to go back over everything, rerecord demos, etc. to make everything more consistent), but as mentioned here in Lesson 2, form shading should be left out of our drawings for this course - so for example, on the barrel. To be clear however, what we did on the bluetooth speaker, which you employed here on this camera is fine - it's less form shading, more the use of hatching to emphasize the fact that the corner was rounded, which can be helpful when dealing with roundedness in forms that aren't basic primitives, and may not be as clear (especially with all of our extra constructional linework). So, to put it simply, shading for shading's own sake should be left out, but there are cases where hatching may be leveraged to make such curvature a bit more clear. Still, definitely something to be used sparingly.

• Lastly, I did notice that you did not include any orthographic plans for your constructions. Admittedly, your constructions do generally feel like you likely did employ them, at least in some cases. If you aren't sure what I'm talking about, or need a refresher, be sure to read through these notes on the topic, and be sure to both employ and include them for your Lesson 7 work.

Anyway - as I mentioned before, I will be assigning some revisions relating to the form intersections, but your object constructions are very well done. You'll find the revisions assigned below.