Hello hello! : D I will try my best to correct your homework.

Congratulations on completing it!

Organic intersections: The second page is your best example. The shape of the sausages is fine, although there are a lot of contour lines in them that don't add anything, as they look flat. Even these killed the illusion of three-dimensionality a bit.

Remember that these contour lines should wrap around the shape, rather than looking flat.

Also, there are some sausages that seem to deflate in the middle, refer to this image as a demonstration.

Animals:

Rather than focus on each specific animal, I will mention the general details that these share.

There's a wide variety, which is good. And I like that you've drawn some of them foreshortened, which is a good practice to keep up.

I can see that the silhouette of many animals has a very accentuated line weight, especially on the tortoise or the horses, which makes us lose interest in the internal details.

Line weight should only be applied in strategic places that we want to highlight, otherwise we end up attenuating much of the drawing.

There are also some animals like the deer ("deer 2") or the lynxes on the first page of these, which look as if they were made of tubes. This is due to not modifying the silhouette to a greater extent.

This is a common mistake, and here is an image where you can get an idea of where you can commonly play with the silhouette.

In most animals, the construction of the face could be worked on more. You can notice that most of them are missing the planes that form the face. These are important as they indicate the proper position of each feature. These images should help with that, 1 - 2 - 3.

I noticed that the design of the legs is rather poor regarding shapes, and in some cases you don't even use sausages for these as base shapes. The legs should be worked with the same importance as any part of the animal. This picture may help as a reference.

Lastly, it seems that most of the time you drew textures it was representing their silhouette. We have already talked about this in lesson 2. It looks stiff and leaves a lot of empty spaces visible to the viewer. Not to mention that you have to draw a lot more detail.

When rendering textures, it is most accurate to draw their cast shadows. This way the missing spaces are not a hindrance and the amount of detail you have to add is less tedious.

If this explanation is not enough, these images should do the job, 1-2.

Conclusion:

I think you should draw two more animals taking into account the details I mentioned.

Take your time about it, and think methodically about each thing you add to your drawings.