11:05 AM, Wednesday August 12th 2020
I would recommend you to read again the notes about texture in the website and retry the dissections exercise. I just don't see any use of cast shadows, you used form shadows and even outlined the volumes sometimes (read https://drawabox.com/lesson/2/2/castshadows), Also, refrain from using hatching or other meaningless marks in this course. You should only use marks that add actually valuable information about the textures. If anything, the cross hatching makes them more noisy and less pleasant to see. This is described in https://drawabox.com/lesson/2/2/formshading.
The other exercises look better, though I see quite a lot of mistakes in the form intersections exercise, so maybe try to be more careful with that in the future, One last thing, the organic intersections exercise should consist of only one pile per page, you put too many sausages in there.