Your arrows page is admittedly a little bare with just the three, but these three are done pretty well. For the most part you're applying foreshortening to the spacing between your zigzagging sections reasonably well in two of them, though the bottom left one does appear to maintain the same spacing. That said, they're flowing nicely through space.

This sense of flow is something that carries over fairly nicely into the leaves exercise, though there are two things I want to draw your attention to:

  • You don't seem to have gotten into any sort of more complex edge detail as shown in the 4th step of the leaf construction exercise. You stopped entirely after step 3. Exploring how to go about building up that edge detail, how to build on top of the simpler edge of your leaves, and so on is an important part of this exercise.

  • The way you drew your contour lines for many of these - a staggered sort of pattern behaving more like the veins of your leaves - suggests a bit of confusion. What we're drawing here are entirely fabricated contour lines, just there to capture the sense of how that surface flows through space. If we were to capture the actual veins, then it would be best to do so using cast shadow shapes, not lines, as discussed back in lesson 2's texture section. It's a common mistake that people make, and something I intend to clarify when I next update this lesson's materials, so I figured I should make that clear here.

Your work on the branches is mostly well done, aside from the fact that you're not quite extending your segments fully halfway to the next ellipse, instead choosing to let them stop a little ways after the previous ellipse. This limits the amount of overlap we actually get from one segment to the next. That overlap is important when it comes to getting the segments to flow smoothly and seamlessly from one to the next, as shown here. Aside from that, you're doing quite well in regards to this exercise, and have constructed solid structures that will be used well throughout the lesson.

Continuing onto your plant constructions, I am for the most part quite pleased with your work. You draw leaves and petals that flow fluidly through space, you're very attentive to the fact that each of these structures are three dimensional, you employ strong, solid underlying forms to build things up and you're not afraid to draw through your forms as needed to make sure you understand how they all exist together in the same space.

I honestly have no significant complaints, but there are a few minor things I will mention.

  • This is only minor because it doesn't appear to have impeded you too much, but in general make sure you draw larger. Give each drawing as much space as it requires, taking full advantage of the room you have on the page. Don't force yourself to pack in the drawings - if you have more space to offer to another drawing left over, then go ahead and use it, but don't set out the goal of fitting a certain number of drawings per page. The reason is that when we draw smaller, we limit our brain's ability to think through spatial problems, while also making it more difficult for us to engage our whole arm while drawing. This can lead to the kind of stiffness that undermines the illusion that our drawings are in fact 3D. It may not have been a big deal for you here, but it can definitely make challenging areas more difficult, and needlessly so.

  • In some of your leaves, like the one at the bottom left of this page, you tend to zigzag your edges a little bit, as explained here. You're still adhering to that previous, simpler structure fairly well, and you're certainly not ignoring it, but remember that back in Lesson 1 I mentioned that you shouldn't zigzag your strokes. Instead, break them down into individual segments that come off and return to that simpler structure.

  • Lastly, that point I raised about capturing your leaves/petals' 'veins' comes up in the top left of this page. Here you tried to capture them as lines, but those veins are 3D forms running along the surface of the object. They cannot be represented as lines, not realistically, because they have thickness to them. You must capture the shadows they cast, in order to employ implicit drawing techniques, capturing them as texture.

So! Aside from those points, you're doing a pretty great job. As such, I'll go ahead and mark this lesson as complete. Keep up the good work.