Hello Haronnh! For the box challenge you don't have to redo it entirely if you want, you can do 50 more boxes or so and turn them in with the older ones. Overall you've done a great job, let's go through it section by section:

Starting with your lines they're pretty confident overall, I can see you aren't afraid of committing to your lines to make them straight even if they miss the ending dot, which is great! The accuracy on them is pretty good as wel already too. The only issue I find is that on superimposed lines your lines do get a bit wobbly at times. Try to approach them the same way as you did on the ghosted lines exercise, commiting to your lines and prioritizing confidence over accuracy. You can ghost the first line as well if you aren't doing it already.

Lastly, mostly your ghosted lines and planes are a bit small, try doing some longer ones on the next times you do these exercises.

Moving onto your ellipses they're pretty confident and smooth overall, great job! Accuracy is pretty good as well, and they're mostly kept within bounds on the tables of ellipses.

I think the ghosted ellipses on planes are a bit wobby though. You might be thinking that the centre of the ellipses is the same as the centre of the planes, but this is not the case. Ellipses have to be symmetrical and have the same form regardless of where they are, so the only things you can change is how wide the ellipse is and which position it is in.

Lastly on your funnels there are some instances where you don't allign the ellipses to the minor axis. You might not be alligning them because the initial curves are a off. But if this happen ignore them, as alligning the ellipses is the main goal of this exercise.

Finally in your boxes a few things:

-Lines are overall still confident and pretty accurate on the boxes section, great job!

-The guesses on vertical, horizontal and depth lines on rough perspective have a few misses but are pretty accurate in general as well.

-Rough perspective has pretty clean and confident lines as well, and the boxes are kept together. The only issue on it is that some of the boxes aren't rotated, so try to keep an eye on that on future attempts.

-One issue is that sometimes you repeat some lines. But no matter how off a line is, don't repeat it, keep going as if it was correct as drawing them will make the drawing messier and encourage bad habits.

-On organic perspective you're making a great attempt as well. Perspective has pretty good guesses already, and the lines are pretty clean and confident as well. One thing you could do is to add lineweight to the overlapping outer parts of boxes that are on top of others to clarify which ones are on top and which ones are behind.

Overall like I've said you've done a great job, so I'll mark this as complete. Don't forget to do warmups from now on and good luck on the box challenge! Keep up the good work!