Don’t take your pictures at an angle, please. It’s really hard to judge them like this.

The lines section looks good, if a little lacking in confidence. This is particularly noticeable in your arcing superimposed lines, where you’ll slow down as you approach the arcs, and in your ghosted lines/planes, where you’ll slow down as you approach the end point. It’s more important for your lines to be confident, than accurate, so try to maintain a consistent speed throughout.

The ellipse section looks quite good, though I notice that the 2nd and 3rd rotations around your initial ellipse doesn’t always match it. Try to maintain that same trajectory, please, rather than course-correct and end up with 2-3 different ellipses. If you’re aiming to, and still ending up with that result, I’ll recommend upping your ghosting time, and being particularly careful not to let your brain have any say in the matter once your pen touches the page.

I’d definitely have liked to see more than 3 boxes for your plotted perspective exercise. Try to fill your pages to the brim, if you can. For the rough perspective exercise, remember that, because of the rules of perspective, the back faces of the boxes are of a similar shape to the front faces, but smaller. So if the front face is, say, a square, the back face cannot be a rectangle. The organic perspective exercise is a little sloppy for sure, but it’s alright. Try not to correct an incorrect line, though. Leave that one as-is, and spend more time ghosting the next one. Also, a lot of your boxes are diverging, but we’ve got just the thing to help you with that: the 250 box challenge.

Congrats, and good luck!

Really nice work! Through your lines section you're demonstrating really confident, consistent executions that helps maintain straight trajectories, along with a good use of the ghosting method to help reinforce those lines with added control. This carries over nicely into the ellipses, where you're focusing on maintaining an even, smooth, rounded shape. Even in your ellipses in planes, you avoid getting too focused on accuracy (despite still doing a good job at it), and prioritize flow and smoothness first.

Your first two boxes exercises are done well too. Skipping down to your rotated boxes, give these notes a read as they describe a problem you're running into here. I also agree that in your organic perspective boxes, you are getting a touch sloppy with your linework, compared to what we know you're capable of. You also have a habit of correcting mistakes - this is a bad habit. Generally you should let your mistakes go and keep moving, otherwise you'll just make them stand out more.

All in all, you're doing a good job, so you should consider this lesson complete.

...aaand I just realized this one already received a critique. damnit.