Starting with your arrows, they definitely flow quite nicely, and you're generally showing a good sense of how the spacing of the gaps between the zigzagging sections ought to get narrower as they move away from the viewer. The hatching lines are the only issue, primarily because you've got lines running straight across curving surfaces, and as such they describe those surfaces as being much more straight and stiff than they ought to be. Instead of using arbitrary cross-hatching here, I would generally recommend drawing the hatching lines straight across the width of the ribbon itself (where the surface of the ribbon itself would actually be straight, rather than curving as it is along the ribbon's length). That's how you see me doing it here.

Moving onto the organic forms with contour lines, you've largely done quite well. The first page has excellent sausage forms that adhere quite closely to the characteristics of 'simple sausage forms' as described in the instructions. This isn't quite as well done in the second page, though, so keep an eye on that. Your contour lines are well drawn, done confidently both for the ellipses to achieve even shapes and the contour curves to properly wrap around the surface of the sausage forms. You're also demonstrating a good grasp of how the degree of your contour lines shifts narrower/wider as we slide along the form.

Your work on the texture analyses are largely quite well done, although there is one thing I'd change to see further improvement. You've clearly done a good job on a few fronts: you've achieved a strong transition from dark to light, and you've demonstrated strong observational skills and attention to detail. My only complaint is that through the second and third textures, you've still relied quite heavily on individual lines, rather than clearly designed shadow shapes. The reason this is an issue is that lines themselves aren't all that dynamic - where a shape can be more than just something that follows a simple path and varies in thickness, a line really limits precisely what kinds of cast shadows it can represent. It also leads to the tendency of students simply increasing the number of individual shadows to build up greater density in their texture (which ostensibly changes the nature of the texture itself, suggesting the presence of more forms), rather than simply making the shadows heavier and deeper while keeping the nature of the texture the same throughout.

One thing that can help immensely with this is to simply make a point of following this process with every mark you draw when drawing textures. It forces you to draw an enclosed outline of a shape, rather than a line that can start and end at different points, then forces you to fill in that shape. You may still draw marks that are very thin and small, but it will never be a simple line.

Your dissections continue to show the strengths I observed previously, and show a greater focus on individual shadow shapes rather than on lines - though it jumps around from texture to texture. Also, with the leaf texture, I commend you for your patience and care, but aside from being a marvel of what you put into it, what you did here wasn't the best choice for this texture. You maintained the same level of density, rather than allowing the shadows to actually merge into areas of solid black, resulting in the whole surface being a single continuous focal point, and actually being pretty hard on the eyes. Rest areas - that is, areas with virtually no contrast (all black or white) - are super important, and should not be neglected.

Coming towards the end, your form intersections are very well done. You've drawn the forms such that they feel cohesive and consistent within the same space, and are off to an excellent start with the intersections themselves. We'll continue exploring these relationships between forms in 3D space throughout the entirety of this course, but you've done an excellent job with this initial introduction, and I expect you'll continue to do well with them in the future.

Lastly, your organic intersections do an excellent job of capturing how these forms interact with one another in 3D space, and also capture a strong illusion of gravity in how they slump and sag over one another.

All in all, your work here is very well done. I'll go ahead and mark this lesson as complete.