Starting with your arrows, your work here is largely pretty well done. The arrows flow nicely through space, and are drawn with confidence. You're also mostly applying perspective to the spacing between the zigzagging sections, getting it to compress as we look farther back, except for towards the very end in some of these where you seem to be hesitant to let those sections overlap. For example, the two at the bottom left of the second page, the last little bit (with the arrow heads) feel like they're suddenly more distant from the previous section than they ought to be. Don't be afraid to let them overlap, this tends to convey a greater sense of depth to the scene.

Moving onto your organic forms with contour lines, you're largely doing a good job of sticking to simple sausage forms (as discussed in the instructions). Where you're running into trouble however is with the contour ellipses themselves. In several cases you're not drawing through them a full two times, and in general you're drawing them far too carefully. Remember that our first priority is to ensure that the ellipses are smooth and confidently executed in order to maintain an even, rounded shape. Once we're able to achieve that, we worry about accuracy, but only while maintaining that previous priority. Right now you're definitely struggling to draw your ellipses confidently, which suggests that you may not be applying the ghosting method correctly. Remember that all of your time must be invested in the planning and preparation phases, and execution must always be done without hesitation.

Other than that, you're mostly doing a pretty good job. Your contour curves wrap fairly well around the rounded form (though I'd still encourage you to overshoot your curves slightly in order to fully hook them around), and in most cases you're demonstrating a proper use of shifting the ellipses' and curves' degree from wide to narrow where appropriate.

Your texture analyses are largely well done, though I do agree that you did struggle with certain aspects of observation. Most specifically, the cracks in your dried painted wood texture don't actually reflect what those little cracks would have looked like - you ended up drawing lines instead of capturing the shadows they'd cast, and from the looks of them, they were largely done from memory. Overall however, I do think you showed considerable growth in terms of learning to focus more on shadow shapes, and being able to control the density of your texture.

Last thing I wanted to mention about this exercise was that when you got into rope, you brought in the form of the rope itself as well - remember that the texture analysis is about laying the texture out flat.

I think you continued to demonstrate a great deal of growth both in how you were capturing texture as well as in your ability to observe your reference. Looking at your dry earth/paint texture, which is the obvious analog of the first texture analysis, while there are still certain similarities, the way you drew those lines with greater weight variation shows that you were this time thinking more in terms of cast shadows than lines. It may not seem that different, but I believe it shows a great deal of improvement. I'm especially pleased with textures like your rusted pipe, where you did an excellent job of not only capturing the nature of the texture itself (without relying on memory), but also showed control over its density.

Your last two exercises - the form intersections and organic intersections - are exceptionally well done. The main focus of the form intersections is your ability to draw forms that feel consistent and cohesive within the same space, and you've done a great job with that. As far as the intersections go, you're largely doing very well, though there is some room for improvement and refinement. That said, this exercise is just meant to be an introduction to the concept, and the understanding of spatial relationships is something we'll continue working on throughout the entire course.

Lastly, your organic intersections do a great job of demonstrating how these forms exist together in believable, three dimensional piles, rather than appearing as a series of flat shapes pasted on top of one another.

All in all, you've done a pretty great job. Watch out for those ellipses from earlier in the exercise, and make sure you draw them with more confidence. Other than that, keep up the great work and consider this lesson complete.