Starting with your arrows, there is definitely a bit of hesitation in your linework here. It's slight, but enough to reiterate the importance of executing your marks confidently. Any hesitation (where we attempt to steer with our eyes to avoid mistakes) causes some amount of wobbling, and that can definitely impede the sense of fluidity and motion we get from a line.

This is actually something I feel you do a bit better with the leaves, which are at their core quite similar to the arrows exercise. Here you're doing a better job of capturing how they not only sit in space, but also how they move through the space they occupy. For the most part you're also doing a great job of building up complexity in structure and in edge detail by building upon the previous phase of construction. The only one that stands out is the bottom left corner leaf, where you have for some reason decided to envelop the leaf shape in an outline with some arbitrary space between them. The relationships in constructional drawing should always be tight and specific, without arbitrary gaps.

Moving onto your branches, I'm immediately noticing that you appear to be starting the next segment of your edge where the previous one ends, which is not what the instructions state you should be doing. As shown here, your segments should go from the first ellipse, past the second and halfway to the third (which you are doing), and then the next segment should start at the second ellipse, resulting in an overlap between them. That overlap is critical to allow for a smooth, seamless transition from one to the next. Since you have no overlap, you have a little jump where the segments meet.

Moving onto your plant constructions, overall I think you end up showing a good bit of growth over the set. When following along with the demonstrations from the lesson, you do so quite well, holding to the principles of construction. When you switch over to your own drawings, however, there's definitely a drop in quality. This is understandable - the demonstrations do not require you to deconstruct a photo reference. So when you do finally have to find the forms present in such an image, it can be a bit overwhelming and you can find yourself trying to solve a lot of things all at once.

As such, we do run into a few issues with this drawing. Instead of adhering closely to the simpler phase of construction for your leaves when adding the wavier edges, you redraw the edge of the leaf in its entirety (as explained here). Construction is about building upon the existing foundation, and only adding the parts that change. What you did here was more akin to building a new house at every step, each one more complicated than the last. We want to build one house, starting from its foundations, and gradually building up more complexity on top of the structure that we built in the previous step.

We get the same kind of problems here - jumping way too deep into complexity without structure to support it. Roses are admittedly difficult, and you actually handled it correctly, to a point. Building a cylinder and then wrapping petals around it is correct, but you need to be drawing each petal in its entirety (even where they get overlapped) to fully grasp how they each sit in space, so you can understand how they relate to one another within it. Otherwise you just get caught up drawing a bunch of lines on a page, rather than forms in 3D space. Furthermore, you didn't really put much effort into the flow line when constructing those petals, and as such they didn't really 'flow' through space, instead becoming quite a bit more stiff.

In your last two drawings, you stuck to much simpler structure, and it came out far better for you. You focused on maintaining the core solidity of those structures, and as a result everything felt much more solid. You also drew through all of your petals, establishing each one in its entirety. I'm quite pleased with how you drew that flower pot at the end too - some students will neglect the parts of their drawings that are not in the lesson title, but I'm very pleased to see that you constructed this flower pot around a central minor axis and that you built up all the ellipses you needed to flesh it out completely.

As a whole, I think you've shown the right kind of progress. While I still want you to continue working on what I've mentioned here on your own, I will go ahead and mark this lesson as complete.