First of all congrats on finishing lesson 2! Despite already completing lesson 3, each lesson completion is a small win which is a big win! Now onto the critique.

Organic Arrows

Your arrows are fairly good, you have a variety of perspectives and they all overlap each other. Good job!

Organic Forms with Contour Lines

Your forms has a hard time being consistent like it starts tampering its size from big to small at times, you also start to have this long forms and then this chunky forms which just complicate things. You also forgot to establish the flow for one of you forms, make sure you take more advantage of the flow line in the future. Now for your contours:

1. Contour Ellipses - Your ellipses are okay, the ellipses snuggle fairly nicely in your forms and you also draw through your ellipses, but they sometimes come out of their forms and the minor axis of your ellipses are a little far off or doesn't really change much at times to really describe the form in space.

2. Contour Curves - Your curves may need more work, some of your curves doesn't wrap around the forms properly and some are way too loose.

I recommend you do some warms-up on ellipses and do some organic forms without the worry of ellipses instead focus on the consistency of the form themselves. Remember when you get overwhelmed by a big problem make sure to break it down into small problems that you can handle

Texture Analysis

I'll be honest your textures arn't the best, your too random, the transition from dense to sparse is really not there and you tend to scribble your lines, but that can be excused for now since exercise's purpose was to introduce and force you at the deep end of the pool anyway.

Remember, textures somewhat has a harmony to them you somehow just need to observe them more and somehow find it, take advantage of the references you have and a take your time

Dissections

This dissections are pretty good, there's some that still carries the flaws from your texture analysis but some are good, you even took the time to write some notes about the textures (basically your texture analysis redemption arc). You curved the form and have a strong silhouette, good job.

Intersections

Nice job! The forms are able to co-exist in the same space real nicely, the only thing i notice you seem to struggle with are the cylinders. As for the intersections not bad, though I'm a little confused on why some of your forms don't intersect with some forms but intersect with some, some of your forms (especially the boxes page) is implying that their overlapping, which breaks the idea that this forms co-exist in the same space.

You said you struggle with intersections but I don't really have much to say considering I think their well done, my main takeaway is intersections are a series of decisions, you decide if how this forms reacts to the other forms, you're going to think about what are you trying to convey, it's all up to you

Organic Intersections

You done a phenomenal job with this forms, they all just stack up on each other naturally! But some of your shadows are a little too timid which is implying the light source is really far away or is really weak which sadly gives you less privilege to describe the form more, to deliver more visual information to the viewer.

I get your point that uncomfortable doesn't really offer that much examples of him using implicit shading (cast shadows only) but we're not trying to be like him, were trying to be our best selves, so I recommend you somehow take uncomfortable's instructions when doing these exercises despite sometimes the contradictions in his examples

Sorry for the critique for taking awhile I'm pretty slow when it comes to critiques. I hope the things I pointed out and advice I gave can help you in this journey of becoming a better artist.

Don't think in terms of the whole box, nor just lines. Try to think in terms of planes, how is this surface going to behave against another one?

The intersection should flow through both surfaces.

You did a good job on the lesson, but I have a piece of critique for the organic intersections' minimalist cast shadows.

You did a great job at conveying form through the sagging and thickening of the sausages but you missed a huge opportunity to describe the surfaces beneath them.