Good going! Skimming through the pages, everything looks good so consider that a pass. Let's review everything anyway to see if we can get you some useful feedback.

Arrows:

Lots of creativity! You made all sorts of curves and ribbons, I appreciate it. A few of your ribbons even have full twists instead of curves, you drew them well but it wasn't quite part of the exercise.

You understood the foreshortening part quite well, differing the width of the ribbon depending on how far in front it is, as well as changing up the space between the curves.

Do pay attention to your lineweight though, you overdid it. Just a gentle line is enough to be able to tell overlap, but yours are clearly visible, I'd even call them thick. Too subtle is better than too noticeable, in this case!

Sausages:

You only uploaded one page, did you forget the second one?

The shape of the sausages look good. Consistent in width with a slight bend, not too complex a shape. Your ellipses follow the shape of the sausage nicely, and I can tell you've tried to switch up the degree of the ellipses as well, though I'm afraid you were holding back a bit too much still. If you look at the example, you can tell the ellipse width really changes from thin to wide: https://drawabox.com/lesson/2/5/ellipses

Textures:

You did not quite make full gradients in your texture analysis page, there is no transition from dark to light. Imagine a very bright light on the right-side of the boxes, shining a light to the left. The goal is to imagine which shapes are there on the page, and draw only the hard shadows of the shapes that stick up. Because the light is located on the right, the further you go left, the more shadow you'll find, ending up in a full black shape.

For the dissections similarly, you ended up with mostly the same texture leaving a gap of white, as opposed to making a proper gradient from light to dark: https://drawabox.com/lesson/2/6/notransition

Also, your dissections don't follow the curves of the sausage properly, causing a rather flat look: https://drawabox.com/lesson/2/7/curvature

Form intersections:

Jeez, you went full ham on this exercise. I don't know if this is A3-format paper or you just made small shapes, but you made plenty of them! Awesome. They look good too, you draw nice spheres and ellipses, and most everything is drawn in proper perspective. I'm impressed.

However, you did draw with a large amount of foreshadowing, which results in a somewhat messy look. The idea of this exercise is to draw shallow perspective, nearly isometric even. When the amount of foreshortening differs per object, it becomes really hard to think about intersection.

As for the intersection lines themselves, you've drawn them a bit arbitrarily, but that's okay because that wasn't the goal of this exercise anyway. No worries about that.

Organic intersections:

Look fine, though be careful of drawing complex shapes. You should avoid draping your beans in this exercise, they have to retain their original shape and just lean against/over eachother. A bunch of your shadows have a bit of a weird shape. A few of them hug the form of the sausages they are cast from: https://drawabox.com/lesson/2/9/shadows

Other shadows are drawn properly on the body they're on, but don't follow the shape of the body they're drawn onto. If you cast a shadow on a curved surface, the shadow will follow the curve of the surface it's cast on.

That said and done, the sausages are otherwise well drawn and you have plenty creativity in your composition.

Overall:

I'm doubting. I'm gonna let you pass without asking for some additional pages, but should you find the time, consider re-doing one Texture Analysis and one Form Intersections page anyway. You draw well and your concept of perspective is solid enough to just continue.

The textures were quite messy, however, and you didn't quite grasp the idea behind gradients.

As for the intersections, try and draw a few shapes with similar foreshadowing, as opposed to mixing dramatic and shallow ones.