Fellow drawabox beginner here!

It seems to me that you know your little flaws here and there well, but i will try to cover most of them

  1. Super-imposed lines, fraying at the end is very minimal, good job, if you want to improve it further maybe try even more complex curves

  2. Ghosted lines, good so far, i see some tendency to arch your lines a bit, try to avoid that and if you want to advance, try not to overshooting or undershooting your lines

  3. Ghosted planes, pretty good, your lines are better here, personally i just think you drew bit too lightly that's all, good execution overall

  4. Ellipse table, don't worry, your ellipses aren't that bad! drawing ellipse is naturally quite difficult, keep those lines tighter

  5. Ellipses on plane, it's bit deformed, don't be afraid to curve out, i think you are rushing your lines a bit thus causing edges or pinches in a ellipse

  6. Ellipes in funnels, good, degrees matchup but for the future, i suggest you practice bigger ellipses just be sure

  7. Plotted perspective, yeah this is good

  8. Rough perspective, you really tried hard here, drawing the other boxes to the vp with red pencil or something else should've been easier for me to see things but it's okay XD, it's actually not that bad, those lines are good!

You'll get even better at doing guesswork as you draw more perspective

I guess i can suggest you should ghost all the way to the vp to your marked point, preparing your arm for the direction in which the line should be pointing at

  1. Rotated boxes, it's fine, but wheres the boxes at the end of each axes? it's quite useful for keeping consistent scale as it's size equals to the smaller box inside your center box, meaning everything going to there shouldn't be too smaller than it and also it's useful for keeping distance too

  2. Organic perspective, it's good

In the future i suggest you should draw the organic perspecive from various angles, bit more at the faces or the edges rather than just drawing the corner side over and over again

Also i noticed that you tend to push your corner into the cube bit too much, it's better than making them poke out too much and i tend to do it too but this effect is more plausible for wide angle lenses, try to keep it minimal

Gotta admit that i am jealous at your lines XD anyway, Congrats finishing lesson 1!

Happy drawing