Hello ochreandcyan,

I will start with the most obvious thing to note: You are using a notebook and I have the feeling it might be A5? Or at least a somewhat smaller format?

I would recommend you use loose A4 paper. A4 to have the space you need to practice lines of different sizes and loose because you want a flat and even surface for your assignments, so that you give your muscle memory constant input for quicker results. With notebooks you have this varying stack of pages under your current page and your wrist will have to adapt to that. Additionally, there is this curvature, especially close to the binding. I would just try to restrict those unnecessary variables as much as possible.

That being said, I think you did well in constructing ellipses and boxes throughout the lesson. Your ellipses are tightly placed into their space, your vanishing points in the rough perspective exercise end up fairly close, your rotated boxes are already decent (and it's a difficult exercise, so read "decent" as a compliment please :) ) and your organic perspective plays with different orientations and scales nicely.

However, i do not see the funnels exercise? https://drawabox.com/lesson/1/funnels

Your lines however have a slight wobble. The superimposed lines are fine but with your ghosted lines I have the feeling you prioritized accuracy over a consistent trajectory. I got the same impression from the organic perspective: The wobbles are quite obvious here and I wonder if you either drew from your wrist or too slowly and carefully. The notebook is probably also not helping.

Don't forget that ghosting and drawing from the shoulder are techniques that should be applied throughout the lessons!

I hope I was able to help you with my feedback!