In regards to the point you were making about using cylinders instead of the sausage method, it comes down to this - using sausages may be harder, and therefore will yield a weaker immediate result. That is no reason not to use them, however. We're not focusing on creating drawings that come out looking good - each drawing is an exercise to help develop the skills being used. Sidestepping an important technique because it is harder to use in this context simply avoids getting practice with it in that context, and will continually cause you to avoid it in the future. At its core, the sausage method is still preferable because of how it allows us to capture the kind of gestural flow that basic cylinders do not.

In regards to the second drawing and the question about fur, when it comes to construction, we don't worry about what the texture of a form may be - only the fact that these masses exist in the first place. So yes, you should be capturing any and all major forms using construction. I quite like how you handled the abdomen in this one, building up that structure to feel solid and believable.

There is a major issue that I want to point out in the third drawing however. Here you drew a ball for the head, and then went on to ignore it entirely, drawing a new more complex head structure on top of it. As discussed in the original critique (when talking about not modifying the silhouette of a form), cutting across your silhouette like this is also going to undermine the solidity of your construction. Always build things up steadily, one form at a time, and once you've introduced a form into the world (like the initial ball form you started with), you have to work forwards from it. You cannot choose to ignore it, or to use it as some kind of loose suggestion. Everything you add to the scene must be treated as a solid element upon which the rest is built.

The one other thing I wanted to mention was that as a whole, throughout these revisions your line quality appears quite scratchy. I'm seeing some hesitant lines, some areas where you're going back over lines needlessly, and so on. I'm unsure of whether this is because you're not applying the ghosting method to each of your marks to keep them confident and consistent, if you're falling back to bad habits, or if your pens are just giving you more trouble as they run out of ink. Be sure to keep an eye on this, and figure out what is happening. You may want to reflect on the mark making techniques from lesson 1.

Anyway, I'll go ahead and mark this lesson as complete, so you can continue to work on this in the next one.