Hello, thanks for sharing and posting.

-Superimposed lines - your gestures are good and i can see your level of confidence increasing as you draw, what i would recommend is , try both drawing slower and see what it feels like then faster and find a point in between, so that you can find a rhythm where you aren't rushing but not too slow ether, making sure that your pen is at the exact starting point before you retrace again. Also, maybe as you start with the straight lines go from short to long and look at the end goal as you go from the start, try this a few times and then when you start doing the curve your eyes can run through the line as you draw,it's like your hand is following the trajectory your eyes are passing through first, this will lessen the split ends and help with your hand-eye coordination.

-The ghosted lines are pretty good.

-The ghosted planes are good, as you draw once you have ghosted a few times keeping your eyes of where you what your line to go can help with accuracy, as your eyes and hand sync the accuracy of your line becomes better. also after you draw the dots looking at each line as if it were an independent ghost line, like the previous exercise, can help to not feel pressured.

-Your ellipses are really confident,but make sure to draw through all of them more that once, when drawing the funnels challenge your self by going from a smaller degree in the center and making it bigger as you go outward this will look like the ellipses are going a way in perspective towards the center line and help you to get more confident with ellipses that have a smaller degree in space ( you can also ellipses with smaller degrees on the other exercises).

-For the rough perspective try to make a bit more diversion of boxes length they don't have to end so close to the VP, try to also draw some small boxes close to the vp and some closer to your view point this will help with differentiation of size and give you more confidence when it come to building boxes.

-In the Organic perspective don't be afraid of overlapping your boxes the onces in the front can be covering the once further away, or some in the same space can overlap each other (remember that even overlapping objects in a composition will always look better than having things next to each other or close to each other). To help with the rotation, Something that you can try independently of this is starting with drawing a square and drawing its rotation in 2d then using the same square and drawing it in 3D looking down at it, then up or vice versa and then using this same cube you have created to try different angles, this will help with understanding how cube will rotate in space independent of a Vanishing point (always drawing through the form), If you need even more help to understand it you can, look at a 3d cube and move it around drawing what you see and the sides tha you don't as well, sketchfab has some models that you can look at. I know that this is difficult (i struggles with understanding space a lot) but once you understand it, its easier to build on it with what comes after.

All in all its a good job keep practicing and you will see results the further you go. Just remember that all the lessons build on each other so continuing to practice this a bit will help you as you work through the following lessons.