Overall, your work here is looking pretty good. Starting with your arrows, they're certainly flowing quite confidently and fluidly through space. There is an issue however, one that I pointed out in Lesson 2 that you still haven't entirely corrected. You appear to not be factoring foreshortening into how you space out the gaps between the zigzagging sections, in many cases still keeping them quite wide as we look farther back. Take a look at this to see how that spacing needs to compress quite rapidly in order to capture a strong sense of depth in the scene.

Now, the sense of fluidity in your arrows carries over quite well to the leaves exercise. You not only capture how they sit in 3D space, but also how they move through it from moment to moment. You're also doing a pretty good job of applying the constructional principles as you add more complex edge detail, and delve into more complex leaf structures including multiple arms.

Moving onto the branches, one thing that jumps out at me pretty quickly is that you're not really handling the way you transition from one segment to the next correctly. In some cases you don't start your next segment back at the previous ellipse, in other cases you don't extend the previous segment fully halfway to the next ellipse. Either way, the result is the same - you end up with minimal overlap between the segments. As shown here, that overlap is critical to help get the segments to flow from one to the other smoothly and seamlessly.

One other thing - when drawing the ellipses, keep in mind how their degree represents their orientation in space. If your branch is flowing across the viewer's field of view, then they'd probably be fairly narrow, and the ellipses themselves would be spread out fairly evenly. If the branch is flowing towards the viewer, moving through the depth of the scene, then the ellipses will be much wider in degree, and there would be less space between them - they'd even be overlapping. Looking at your branches, I don't entirely get the sense that you're aware of this when laying them out.

Continuing onto your plant constructions, for the most part you've done a very good job with these. Your leaf constructions still flow quite nicely through space. While the more complex edges of this fern's leaves are definitely drawn with a lot of hesitation (probably because you drew them in a single continuous stroke - you should be breaking these into separate, confident marks), you adhere to the structure of the simpler leaf shape quite well. Just don't forget about this rule of markmaking.

One other thing that can help is that when constructing anything cylindrical - for example, pots and vases - make sure you construct them around a central minor axis line. This will help you correctly align the various ellipses that will be necessary in its construction. Looking at drawings like your aloe vera you laid out those many ellipses correctly, even establishing the lip and rim of the pot's opening - but the ellipses themselves weren't particularly well executed. Their alignment is inconsistent (the minor axis line would have helped), and you're not drawing through them as discussed back in Lesson 1. Don't forget to draw through them, and to apply the ghosting method to maintain better control over them.

Continuing to look at your aloe vera plant, I noticed that you skipped the "flow line" of the leaf construction process. This is important - that flow line allows us to establish how that whole leaf is going to move through space. While the aloe vera has much thicker, denser leaves, it's still going to have a flow through space, and so pinning it down early on in the construction is important.

Aside from those points, your work is coming along well. I'll go ahead and mark this lesson as complete. Keep up the good work.