Hi there! I saw your submission so I figured I'd take a look:

Organic Arrows and Contours. I'm seeing clean confident line work for the most part here, save for one kind of wobbly arrow on the right side of the page here. There are some errors with line width across a number of these however. This creates arrows that do progress through space, but they have sections that appear less dynamic, which brings down the overall appearance of the arrow in question. Practice, as always, will help with this. Make sure you consider the path your second line will take as it moves in tandem with the first. I traced over a few of your arrows in case you find it helpful. Other than that, I thought you did a good job of keeping track of how the arrow bends in space. It may help to apply some line weight to the line that overlaps the other on the arrow.

With the contours it looks like you have the right idea as far as the ellipses shifting in degree as the sausage moves closer or away from the viewer. The sausages are well made with good effort to ensure that the forms are evenly sized throughout. Make sure you keep your ellipses aligned 90 degrees to the minor axis as you work though. I also noticed with your contour curves page that you ran into the trap of contours that don't probably shift in degree on the ellipse. It is a bit harder compared to the ellipses assignment, especially since we aren't drawing through the elliptical mark we make. Make sure you ghost your ellipses, even if you aren't drawing a full one. Alignment to the minor axis applies here as well.

Texture. Your analysis page looks pretty spot-on as far as utilizing cast shadows to describe form; one thing to look out for is not utilizing the black band in the analysis window. Those bands are as much a part of the shadow shapes as anything else you put in that window, so those bands should stretch and merge into the other shadow shapes in the window. A small detail at the end of the day, but if you end up doing the texture analysis challenge, then it's something to keep in mind.

Dissections generally look okay. You definitely try to keep the textures following the form of the sausage, and you push the silhouette out to capture the texture's forms. There are a number of these that sort of miss the mark. The ones that stand out to me are the thorns, tentacles, rippling water, and the succulent. These surfaces can be a bit complex to understand, so I drew some sketches that might help you see the forms that we're supposed to be describing. These surfaces are generally considered smooth with the exception of the forms that protrude from the surface. These surface forms will typically not be drawn through, so we really have to lean on pushing the silhouette to make them visible. With the rippling water, the silhouette is the only way to show this texture. I do want to note here, that in lesson 3, there's a demo of a cactus where the bumpy surface is completely drawn through; I don't remember the logic of that, but I believe it wasn't a construction that had any texture to the drawing, I just wanted to warn you that it may seem contradictory. Incidentally, doing the organic intersections exercise can help improve your understanding of these surface forms, and that happens to be the next section.

Form and Organic Intersections. If there was a page that was just box intersections, it looks like it wasn't successfully uploaded. That said, these intersections look logical, though the lines are a tad scratchy here; much like any other assignment, we want to strive for smooth confident lines every time. Organic intersections look pretty good too, though you may want to keep your forms more uniform in design. That said, this is nothing I'm going to nag you about, it looks like your contours make sense in these.