7:33 PM, Friday July 24th 2020
Great job on these! I really like the attention to linework you've put in :)
There are a few boxes where the vanishing point is in the wrong direction. Any time your projection lines come out of a visible box face and converge to a point toward then viewer then it is a malformed box.
https://drawabox.com/lesson/250boxes/1/wrongdirection
By the end of the challenge you seem to have caught on to it. I am only bringing it up here on the remote chance you hadn't actually realized it and just happened to switch your methods. :P
Again, great job! Congratulations on finishing your first DAB challenge! :)
Next Steps:
You should be good to go on Lesson 2