Thank you for getting me the right link!

Overall you did great! Your lines are straight and confident looking. You also do a pretty good job of getting your sets of parallel lines to converge more consistently towards their shared vanishing point.

For the future, I recommend that you start trying to add some extra line weight to your boxes, as shown here. This will help further reinforce the illusion of solidity in your boxes/forms.

You said you had done the challenge before, so maybe you have seen this before. But before I send you off I want to show you this diagram just in case as it can help a lot with thinking through your convergences. So, when you are looking at your sets of lines you want to be focusing only on the lines that share a vanishing point. This does not include lines that share a corner or a plane, only lines that converge towards the same vanishing point. Now when you think of those lines, including those that have not been drawn, you can think about the angles from which they leave the vanishing point. Usually the middle lines have a small angle between them, and this angle will become negligible by the time they reach the box.

Congratulations on completing the box challenge (again) and good luck with lesson 2!