One of the reasons getting feedback from someone other than yourself is so important is because often the things we believe are our weaknesses aren't, and it can make it considerably more difficult to identify the actual issues that are holding us back. That is much the same for you - you focus on your issue being with the confidence of your linework, but looking over your work that isn't the problem at all. In fact, confidence is one thing you've got in spades.

It shows up best throughout the super imposed lines exercises - now, keep in mind that I mainly focus on the straight ones here, as the curved and wavy lines are much more difficult and they tend to cause everyone to stiffen up. The straight lines however show that you're able to hold to the same trajectory even through longer strokes, and that you largely avoid hesitation or steering the stroke with your eye. That's exactly what I want to see here.

For the most part, you're doing a decent job of applying the ghosting method properly on top of that in order to reinforce your confident execution with proper planning and preparation, resulting in greater accuracy and control. You do tend to overshoot/undershoot your lines (which is totally normal), though one thing you can do to improve on this front is to get used to lifting your pen as you pass the mark rather than trying to slow to a stop, since lifting off the page is something we can do more quickly.

Where your work shows weakness is actually primarily in your ellipses. The confidence is definitely there, but you're having trouble keeping them tightly bound together. One common cause of this is when students tend to draw ellipses more from their wrists or elbows rather than their shoulders. I'm noticing more issues with your smaller ellipses, so you may be using your wrist for those, and as your ellipses get larger you might shift towards using your shoulder (resulting in better results). That is the main thing you'll need to focus on here. The larger the radius of the pivot you draw from, the more consistently you'll be able to maintain the path of your stroke (even at smaller scales), and therefore the tighter you'll be able to keep your ellipses whilst drawing through them.

Skipping down to your rough perspective boxes, you're mostly doing a good job of keeping those lines straight and consistent (a couple tend to arc a little but I think that's just where you got a little sloppy). There is some overshooting here and there, but overall your approach is solid and practice will take you the rest of the way. For your rotated boxes, you did a good job of keeping the gaps between them fairly narrow and consistent, so as to eliminate any unnecessary guesswork, though you are running into this issue where your outermost boxes run roughly parallel to their immediate neighbours, instead of rotating relative to them.

Lastly, your organic perspective boxes are a good start, though as expected there is plenty of room for improvement in getting your sets of parallel lines to converge more consistently towards their shared vanishing points. I am also seeing a slight tendency in certain places to repeat a stroke in order to correct a perceived mistake. This is a bad habit that comes with drawing perhaps too confidently (that is, just being confident without thinking and control). Ensure that every individual stroke you draw goes through the planning and preparation of the ghosting method, and if you make a mistake, leave it be. Don't correct it ,as this will just draw more attention to it.

So! All in all, you're doing well, but you do need to continue working on getting your ellipses more under control. You can do that as part of your regular warmups (where, as discussed in Lesson 0, you'll be revisiting the exercises you've learned here). As such, I'll go ahead and mark this lesson as complete.