Hi!

This is my critique.

Lines

Superimposed Lines: they wobble a bit. Remember confidence over accuracy. Look a little at the beggining of the lines they are fraying this usually happens because you are not paying enough attention.

Ghosted Lines: Some of your ghosted line wobble, but some of them are very nice. Try to make your lines confident.

Ghosted Planes: Same comments as above, although I noticed that some lines are more confident, so good job. Also sometimes you drew two lines that goes twice in the same direction this is not good thing you should draw your lines once in this exercise.

Ellipses

Tables: Sometimes it seems like you dont draw your ellipse with confidence. Try to draw your ellipses in a way that while going twice over them you finish at the same point you begin.

Planes: In this case you have the same problems that I mention above including the wobbly lines.

Funnels: The ellipses are also fairly parallel to your minor axis lines but they still have the same problem.

Boxes

Plotted Perspective: Completed. Some of the boxes look distorted you push them very far from the vanishing points. Look:

https://drawabox.com/lesson/1/7/distortion

Rough Perspective: Some of the horizontal and vertical lines for the boxes farther away from your vanishing point are not parallel with the horizon line or page edge. Don't worry though - you'll work on this in the 250 Box Challenge.

Rotated Boxes: Good spacing around the boxes. The boxes along the top/bottom of your "sphere" could have been rotated more (since they should be almost flat), but it's still a good attempt!

Organic Boxes: This exercise is difficult but you will improve in the 250 boxes challenge!

Your lines look decent. For those I'd simply try to tighten up your lines, but that'll come with time and practice. Some of your ghosted lines look wobbly, which is bad. Even curved lines are better. You might want to spend more time ghosting before executing the line. The ghosted planes need refinement with your line straightness and accuracy, which is off . You also didn't do all the lines for some of them. Your ellipses are the same as your lines, just tighten them up. You got the same issue with your ellipses in planes, just work on them. Your funnels lack variation, all of them have the same minor axis. I'd practice more with those. The only issue i can see with your plotted perspective is that you did not properly thicken the box outlines, the outside edges must be darker than the other lines. Rough perspective is rough, spend more time ghosting and visualizing your VPs. Your rotated boxes look way better than mine, I can't say anything. Your organic boxes kinda look like they're melting, which seems to come from poor converagnces. Remember that all converging lines should meet at the VP, and that only lines going away from the veiwing should converge.