Starting with your arrows, they're flowing very nicely through space. You capture a strong sense of fluidity and movement to them, which carries over into your leaf structures. Often times students, being that this is the first introduction to drawing concrete, real objects, they'll get overly focused on how a form sits statically within 3D space, and it'll cause them to stiffen up. Here you've not only established how the forms sit in space, but also how they move through the space they occupy.

I'm also noticing that you're generally respecting the principles of construction when adding edge detail, building off the scaffolding and structure set out by the previous phase of construction rather than treating it like a suggestion to be ignored when it suits. My only complaint is that you really focused on adding edge detail to the smaller leaves - they're all pretty cramped, not giving much room to really explore the object. Would have been nice to see the larger leaves being pushed further as well.

Moving onto your branches, these aren't badly done, though I think that you're not entirely clear on how the segments should be overlapping. As shown here, you need to make a point of getting one segment to extend fully halfway towards the next ellipse. Then your next segment will start at the previous ellipse, overlapping that last chunk of the previous segment directly, treating it like a runway before shooting off towards its next target. This overlap is critical to getting those segments to flow seamlessly together, so as to make the whole edge look like a single continuous stroke.

Moving onto your plant constructions, you've largely done a pretty good job. There are some places where you stiffen up, and I think you'd do well to draw things larger. Giving yourself more room really helps engage your spatial reasoning skills, as well as encourages you to use your whole arm, whereas drawing smaller can often make things more difficult.

Some of the issues I addressed previously - mainly the issue with your branches' segment overlaps - are certainly present in your drawings here, so continue to keep an eye on that. Also, when drawing the petals of your flowers (like on this page) make sure you're always thinking about how that initial flow line is supposed to define how that petal moves through space. Since you're getting smaller here, it's easy to focus more on just making that petal stiff and solid, rather than fluid. There's a similar stiffness with these leaves.

One thing I often do to help remind myself of how those petals and leaves need to move through space is to draw a little arrow head at the end of the flow line, as this helps my brain draw the connection between the leaf and the arrow exercise.

There's one other thing worth mentioning - when drawing a plant that involves a lot of repetition (the right side of this page), you can always just focus in on a particular piece of it. This will allow you to draw it bigger on the page, and allow you to study the nature of those forms with more specificity.

Anyway, all in all you're definitely making progress, just be sure to keep your eye on the things I've mentioned here. I'll go ahead and mark this lesson as complete.