Hello William1066, I hope you are well,

Your boxes are coming along nicely, they do get better throughout the whole challenge. As you said around 150 boxes mark the boxes get a little “worse”, your back point shows it the most. But you worked on that and fixed that mistake, well almost. It is still visible that you are struggling to keep your boxes consistent without any convergence errors.

Sometimes your lines converge in pairs, it doest happen rarely, but I feel like this needs to be called out, so you understand what is wrong about it. https://imgur.com/KSHwTwo this is what you do sometimes, we don't want that because we want all our 4 line to meet in the same point, a vanishing point, as shown here https://imgur.com/8PqQLE0. This diagram should also help you understand the angles of lines converging to the vanishing point. The inner lines have a smaller degree unless our box is long and it also depends on the position of our vanishing points.

You also had a problem of repeating/splitting (in case of lineweight) your lines in the beginning, which vanished but not completely. That could come from not properly adding line weight. Always that as much time as needed for ghosting and then when ready, confidently execute it. This diagram shows how to properly add lineweight https://imgur.com/OHvr7Mb.

Lastly, few of your boxes are way too small. Drawing small makes it uncomfortable for us to draw. Best examples 160,226. Additionally you have plenty of empty space on your pages, which could be used to make your boxes a little bigger. I think it is fine if our lines checking the converege go over another box a little.

Overall there were few mistakes here and there. I think you made a good improvement and with more practice you will become more consistent with them. So I will mark this challenge as complete.

If you have any questions feel free to ask,

Have fun during your journey.