Hi! Let me first address your questions.

1. Officially, the warmups should start when you finish lesson 1, and move on to the box challenge, but it’s perfectly fine to start them earlier, too. Seeing as this was unclear, I’ve mentioned it to the boss, so that he may change the wording for it in the instructions, if he feels it’s necessary.

2. I’m not knowledgeable enough about this to be able to give you an answer (with any degree of authority, anyway), so I’ll instead recommend asking this in our discord server. There’s thousands of people online at any time, most of whom are working on other things in parallel to this course, so you should be able to get a clear, detailed answer there.

Now, let’s talk about this submission!

First things first, congratulations on finishing it- this is quite the accomplishment. The first thing I notice is that your boxes are a little small. Big boxes are not only a sign of confidence, but they provide us the room to think about the various problems this challenge throws at us. They come with their own set of challenges, too, which is why, in the instructions, it’s recommended to stick to 5-6 boxes per page. This is not a huge issue, however. Looking over them, your boxes start off strong, and improve considerably. The first improvement is in regards to the line quality, most evident when looking at your hatching lines (which, by the way, I’m pleased to see you’ve taken the time to add- it has served you well!) They started off a little insecure, and they’d have some trouble starting at the correct starting point, and remaining parallel, but all of these issues are fixed by the end. The second improvement is in regards to their convergences. Though the challenge started off strong, the usual 3 lines per set converging, the rate at which they’d converge was not always consistent (as in, one convergence would be fairly dramatic, suggesting that the vanishing point is fairly close to the box, and the other would be shallow, contradicting this.) For this reason, and, to take already good boxes to the next level, we recommend students take a look at this diagram, and pay particular attention to the angles of the lines at the point of intersection. Doing so can help in the construction, as, being fairly close to each other, certain lines (like the middle lines of the box, for instance), can be treated as being essentially parallel, eliminating any guesswork from that particular set. With this knowledge, if you were to look at box 250, for instance, you’d notice that, had the back red line been a little off to the left, thereby becoming parallel with its front counterpart, not only would its convergence be more correct, but the other 2 sets would improve, too. Consistently thinking about these relationships is the first step towards having them become intuitive, so I highly recommend it.

Anyway, consider this challenge complete, and feel free to move on to lesson 2!