Hello Paradosso! My name is Finch and I will critique your submission today.

Your lines tend to converge well and you've tried out both shallow and dramatic foreshortening which is good to do. Your lines extend in the right direction and are easy to understand and analyze. Your lines are also nice and confident, so good job on that as well!

I honestly cannot see any mistakes in your boxes, you have followed the challenge and read everything carefully and it paid off. Here is a recommendation for future warmups instead:

Variety: You are already trying shallow and extreme foreshortening, but there are many other ways that a box might appear in a given space. Some ways you can push yourself are the following:

• Extremely long boxes: making a box very long, but small in width and height, like a toothpaste box.

• Extremely wide: this box follows the same principle as the type above, but you'll push the width instead and make it extremely flat, like a pizza box.

• Making one plane very small: While you have been experimenting with box shapes already, which is good, I have not seen this one yet. This box is characterized by having one very small plane and two big planes.

Here's a quick illustration of the three boxes I have described: https://imgur.com/a/KkbUxmj

I'm sure that you can think of other ways to vary boxes as well, don't be afraid to experiment in your warmups.

All in all, you have a great grasp on the fundamentals taught in this challenge. Your next step will be to tackle lesson two, good luck!

I apologize for the short critique, if anything is unclear let me know and I will elaborate on it. If you're reading this to add agrees and feel like I have missed something, let me know so I can improve my critiques in the future.