Hello DELUFRA,

Congratulations on finishing the 250 Box Challenge.

I want to start with your lines. They look confident, but I see some line corrections, so I would recommend you not fix the line by drawing it twice as it appears messy and kills the illusion of solidness of the box. It is good that you planned out every line using dots, and it seems like you are ghosting them enough before drawing them, which makes most of them look confident and clear.

You extended the lines of the boxes correctly, but in a few of them, you seemed to forget to extend some corners. You might want to limit the number of boxes per page so that the extended lines won't confuse you, and that way, you can see your mistakes more clearly. Five boxes per page would be enough.

It is good to see your understanding of perspective increased as you go on. But there are still some issues regarding the inner corners. This order of drawing might help you get a better result. Also, thinking about the relationship between lines in every step will help you draw the corners more accurately. This is explained in this diagram, so take a look at it.

In general, I like your confident lines, the way you plan your boxes, and the improvement of your perspective. So keep practicing your boxes as your warm-ups, try to be more accurate in your inner corners so that they won't diverge, and when you feel ready, you can check the advanced box exercises from here.

Good luck :)