Good work. This was a hard one for me at least so good job finishing it! Here is my feedback. I hope it is helpful.

Arrows:

Your arrows in space are looking pretty good perspective wise. I'm going to suggest that when you practice this exercise again in your warmups, just try making more various shapes for the arrows though because i noticed that you used very similarly shaped arrows quite a few times and you will learn more if you try new stuff.

Organic forms with contour lines:

Will you please also do some warm up pages on some of the days before you start drawing (I'm not asking for you to resubmit this, but i think it would be quite helpful to keep practicing these). Do some pages that have a few of the contour ellipses and a few of the contour curves too just to keep practicing? Mix up the old exercises you felt you need improvement on and use them for warmups.

Textures:

This exercise is hard. I know it was for me. My main observation of your work is that on your dissections in some areas you are outlining shapes rather than implying them. You could also push the illusion that the shape of the form is wrapping by making the middle of the section lighter than the outer edges to hint at a highlight and then more shadows as the edge of the form moves farther into the background. My advice is to take a sketchbook and just go out in nature and observe then sketch as often as you can. The more you do it, the better you will become, even if you do little bits at a time. Practice drawing the things you want to draw but apply what you've learned from this exercise.

Form Intersections:

This one was tough for me so I don't know how qualified I am to make corrections or suggestions for you, but it does look like there are a few instances were the form has passed through another in more than one section but you have not indicated that on some of your shapes. Just keep practicing.

Organic Intersections:

On your organic intersections I there are noticed lots of places where you didn't draw through your forms so do one more page of those and resubmit that before you do the next lessons. If you are not sure what I mean by that, watch the video from the exercise or message me back and I'll try to explain better why I am thinking it would be wise to redo it before moving on.

Hope this helps and I'm looking forward to seeing your revisions.

Molly