Congratulations on completing the challenge! We know it was time demanding and difficult, but you managed to do it, well done!

Now, the analysis

The boxes are well structured, i remark essentially the quantity of dots you drew to try to find the best angle possible. It reflects in your work because you make good approaches towards the vanishing points.

However, some lines are too thick and you tend to make a lot of dramatic foreshortening. Keep them shallow.

Conceptual mistakes

-Try to take better pictures. Frame the pages so we can only see the exercise, it will be easier and more pleasant for us to critique your work.

-Avoid using the other face of the paper to make the next exercise. The ink can be seen form the other side of the paper and distracts you and the people critiquing your work.

-The last picture doesn´t show anything. Before submitting check that every picture is correct.