Awesome they seem to all be accounted for now.

I'll start off saying that you have improved over the course of the challenge which is great but there is still work to be done and I'll get to that shortly. I'm glad you included the non-numbered boxes at the end because they elevate your submission quite a bit and without them I would be more concerned with some of the things I'm seeing.

I'll be going through the faults I see in your numbered boxes first, and after I'll point out the improvements I see in your non-numbered boxes because the difference is quite large.

First thing that is very apparent is that the line quality of your numbered boxes is quite rough, I'm not sure if it was the pen/paper you were using or due to not drawing confidently but your lines are very messy. You attempt to redraw quite a few of them as well which is a habit you shouldn't develop, it doesn't erase mistakes and just makes things look worse. It does appear you tried to apply line weight but instead of doing it on just the silhouette as explained in the lesson material you applied it uniformly to every line which doesn't accomplish the goal line weight is meant to. Compare them to the non-numbered boxes you show afterwards where your lines are much cleaner and tidier. One last thing to note about the linework is that you do need to put some more practice into your hatching technique, you want to be ghosting each line and extending them from one edge of a box to the other in straight confident parallel lines, having just floating curved lines doesn't accomplish much.

With line quality aside there a few things I'd like to make note of regarding your construction as well. You did do a good job of keeping your sets of lines mostly parallel, my concern is that you may not understand that the goal isn't to have them be completely parallel. As a 3D object that we hold a box would indeed have parallel measurements, but due to the way we view things (especially when trying to represent it in a 2D medium via drawing/photography/filming etc.) their edges converge towards a vanishing point. You may find this example helpful, it shows how a set of lines behaves in regards to it's vanishing point. While the inner pair will nearly always be parallel, the outer pair will vary greatly depending on how close the vanishing point is to the object. This is really important to understand when implying scale and depth, a skyscraper viewed from down low converging up towards the sky is a common example. I mention this because through the entire challenge you didn't experiment with foreshortening or moving your vanishing point much, you kept it as far back as possible which ultimately lead to your lines being nearly parallel through the whole thing.

Once we get to the non-numbered boxes as mentioned your linework has greatly improved, though your hatching still needs work. My concern for your understanding of foreshortening with vanishing points still exists, but you do seem to experiment a bit more here as well. The boxes you have here are more consistent and better constructed then the ones early on in the challenge which is great, your improvement is noticeable here, you just need more variety to build a better understanding of how things react in different scenarios.

With all of that said, while you do have work ahead of you and room for improvement, I will be marking your submission as complete.

If you hadn't included the extra boxes I would have asked you to submit more with some of the corrections to things I made note of above, but because you're drawing extra as is I believe that with these things pointed out you have the ability to put in the effort to correct them and experiment on your own time. That being said make sure you are still following the 50/50 rule mentioned in Rule 0 of course, drawing boxes shouldn't replace drawing for yourself.

Good job having the willpower and discipline necessary to get through the challenge, I hope you continue to improve and work hard. Good luck in lesson 2.