12:17 AM, Wednesday February 11th 2026

For the first 50, your lines are clean overall. However, I did see a little wobbling throughout the set. Your convergences also show decent accuracy, though I did see a few lines pair off and converge towards two vanishing points, like in box 2, box 27, and box 46.

For the next 50, your lines show improvement, with little wobbling present. Your convergences also show improvement in accuracy, though there are a few more instances of lines pairing off, like in box 56, box 72, and box 88.

For the last 150, your lines show minimal wobbling by the end of the set, demonstrating very good technique and consistency. Your convergences also continue to improve, though there are still instances of lines pairing off, like in box 114, box 176, and box 239. In these boxes, the inner lines (green and orange in this diagram) diverge instead of converging at the vanishing point. Keeping in mind the angles of neighboring lines can help when planning the box's construction.

As an aside, box 195 is missing some line extensions. It's not an issue since it only happened once, but I want to point it out for future reference.

All said, you did very well. I'm going to mark this challenge as complete.

Next Steps:

Continue on to Lesson 2, and add rotated boxes with line extensions in the style of the last 150 to your warm-up exercise pool.

This critique marks this lesson as complete.
9:56 AM, Wednesday February 11th 2026

Hi,

Thank you very much for the detailed critique, it is very appreciated!

I need to continue working on my 3D visualization skills.

Looking forward to the next lesson.

Best regards!

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