Hello osbornnick, I'm ThatOneMushroomGuy and I'll be the TA handling your critique today.

Arrows

Starting with your arrows your linework is smooth and confident which helps sell the illusion of fluidity that arrows have as they move through the world. You're generally making good use of the depth of the page with your use of perspective, although this could be pushed even further by varying the size difference between segments even more.

You're making use of hatching which is good as it helps you reinforce your spatial reasoning skills, it's also good that you're adding extra lineweight on top of the overlaps in order to reinforce the depth of your arrows. Coming back to your hatching, you're generally adding it to the correct side of the bends, but you do have one instance of adding it to the incorrect side here which disrupts the illusion of depth you wish to achieve with these objects.

• Perspective works in the following manner: things that are further away from the viewer will look smaller, and as they get closer to the viewer they'll look bigger. The way this affects an object of consistent size and width that stretches across space is that certain segments of this object will look bigger and others smaller, either gradually or dramatically depending on the perspective of the scene, as such the bigger part of the arrow will always be the one that's closest to the viewer so the segment that's behind it should be the one that you apply the hatching to.

Leaves

Your leaves are coming along quite nicely and fluid, you're not only capturing how these objects sit statically within space but also how they move across it from moment to moment.

Still, remember to folllow the instructions for the exercises and to only use a single pen for your entire construction, there are some green lines present in your work, and they shouldn't have been made.

Your usage of edge detail is looking quite well made, in general you're not attempting to capture more than one piece of detail at a time which allows you to maintain higher control over your marks and your forms. You're also adding it in with roughly the same line thickness as the rest of your construction which is good. Just don't forget to avoid cutting back into your forms, and to draw edge detail additively as much as possible, as cutting back into our forms can cause us to focus too much on the 2d shapes on the page, instead of the 3d forms they represent.

It's good to see that you're experimenting with more complex leaf structures but this structure is looser than it could be, because there's no boundary that keeps all of the individual flow lines for the individual "arms" of the complex structure connected to one another, despite being different parts of a structure, these "arms" still exist as part of a single entity and they're affected by one another, so it's important to keep your phases of construction tight and specific.

Branches

For your branches they're coming along decently, they look pretty organic without loosing their sense of solidity and tridimensionality or feeling awkward and stiff. That's because you're following the instructions for the exercise which help you create these well constructed structures.

For your ellipses while it seems that you're trying to draw through them twice, for the most part your ellipses haven't been drawn through twice, so don't forget this very important step.

It's good to see that you seem aware of the ellipse degree shift and making an attempt to add this variation as you construct your branches, however some of the degrees added in your branches are inconsistent with the form of the structure, and become wider when they should be thinner, and thinner when they should be wider. Make sure to revisit the explanation for the ellipse degree shift.

Plant Construction Section

Now let's take a look at your plant constructions, which are general moving in the right direction as you're putting in the effort to make use of the construction methods and techniques introduced in the lesson, which allows you to start developing your sense of spatial reasoning much more. You're facing a couple of bumps which are holding you back from your full potential, so make sure to keep these points in mind the next time you tackle these exercises.

Something which severely impacts the quality of your work is the fact that you're pre-planning the amount of constructions you wish to fit on a given page before actually committing to any of them. This is admirable, as it's clear you want to maximize the amount of practice you get per page but unfortunately this actually hurts how much you get out of each indivirual construction because due to their size you're forced to spend less time on each drawing, and it limits your ability to make use of the methods and techniques introduced in the lesson to their full extent.

For example this page and this page have a lot of white space in them which could have been more effectively used by drawing your plants much bigger, this would have made it easier for you to solve the spatial reasoning challenges that arise while tackling these lessons, as well as making it easier for you to engage your shoulder when drawing and creating smoother lines.

• You have a tendency to add too much lineweight around the silhouettes of your plant constructions sometimes, such as in here this softens the distinctions between the forms and flattens the structure out somewhat, almost as if pulling a sock over a vase. Instead of being used in this manner, lineweight should be added subtly, with only a single line, and only with the purpose of helping clarify the distinctions between overlaps.

Still speaking of this page in the bottom construction you only drew the parts of branches that were visible to the viewer, but this is a mistake.

By only drawing what's visible you limit your ability to work through the tridimensional puzzles that arise as we tackle these exercises and it becomes harder to truly understand how the object you're drawing works - where forms come from, what they attach to and how they exist in relation to one another are all important aspects of a construction which become null and void when you don't draw through your forms. So draw through all of them, as small or as unecessary as you might believe them to be.

• When drawing plant pots and similar cylindrical structures, make sure to do so around a minor axis as that'll help you keep your several ellipses aligned to each other more easily.

In this construction the red circles mark the inner stems of the flower, which you did not fully construct, this manner of approaching these pieces of the structure does not communicate any form, but they don't help create clear relationships between forms, and they don't help you understand how each part of the structure you're drawing sit in space in relation to one another.

Final Thoughts

In general your work is good, you're moving in the right direction. You're starting to understand the concepts this lesson seeks to teach, you're stumbling upon a couple of roadblocks which harm some of the solidity of your work and stop you from making the most out of this lesson, so you must keep them in mind and remember to avoid these mistakes in your next attempts.

I believe you're ready for the construction challenges in the next lesson, just make sure to be aware of the issues pointed out so that you can avoid them in your next pages. I'm going to be marking this submission as complete, good luck in Lesson 4.