Okay, these are looking better. A few notes here. For the rough perspective exercises the linework is much more confident overall but I'm starting to see some line wobble when you are adding line weight. If you want to add line weight make sure you don't revert back to using your wrist and are drawing from your shoulder with confidence. Also added line weight should be subtle so try and only go over a line one additional time instead of multiple times. One thing that can help you a bit when doing a one point perspective exercise like this is to realize that all of your horizontal lines should be parallel to the horizon line and all of your verticals should be perpendicular(straight up and down in this case) to the horizon line. This will help you avoid some of the slanting lines you have in your constructions.

The rotated box exercise looks pretty good as well. Although you drew this at a decent size one thing that would have helped you would have been to just draw this bigger overall. Drawing bigger really helps when dealing with complex spatial problems. You did a good job drawing through your boxes but one of the reasons this exercise started to fall apart on you is because you didn't keep the gaps between your boxes narrow and consistent. https://drawabox.com/lesson/1/17/guessing Keeping the gaps narrow and consistent really helps with inferring information about neighboring boxes rotation and proportion. While the rotations here aren't perfect this was a good effort overall. The more you draw and develop your spatial thinking ability the easier these rotations are to handle.

I'm going to mark this as complete and good luck with the 250 box challenge.