Hey Popl, congrats on finishing this lesson.

Your lines seem good, with no major problems, except for some wobbling that you should be aware of. Remember to draw fast with a shoulder motion in order to keep a smooth line. This happens on your superimposed and ghosted lines.

Your ghosted planes seem slightly better, although it seems you didn't place the dots before drawing the inner lines. You should place dots for all your lines, so they act as a goal to where you're drawing the line.

Overall your ellipses are good, a couple of them show some wobbling, specially in the funnels, maybe because you were trying to force them to find in the within of the exterior lines. Keep in mind that right now you should focus more in keeping the lines and ellipses smooth, as accuracy will later come naturally, if you keep practicing correctly.

Your boxes exercises are also decent, although in some cases, specially on the organic perspective, you don't seem to be placing the dots before the lines. Remember to do this for all your lines. Also, in this exercise, you could also have overlapped some more boxes and played with the line weight, in order to highlight which one is in fron and which is in the back.