I am still in the failing stage and I will be here for a while ;). I found this resource from a Proko student which is the 3D grid model of the rectangle twisting. I thought it was a nice extra to share with the rest and see if you are like me, that I am still trying to wrap my head around this https://practicedrawingthis.com/3d/model-twisted-box.html

I was getting pretty confused with the upside down view and I decided to colour it so it can be more understandable…hopefully. I have so many questions from how to construct a proper grid? Sorry at some point I gave up on eyeballing the proportions so that’s why the planes have this funny stocky look, as opposed to Marshall’s that look more slender ;). This exercise was hard!! 🆘

I purposely drew them arbitrarily and not in the nine positions shown in the video, and honestly it was confusing and challenging trying to figure out if the foreshortening was right, if it was moving towards or away. Again thanks for the excellent lesson…this takes time to practice before you feel confident in which orientation I am trying to draw the arrow, how the box should look, and many more things to keep on practicing:)

This is tough exercise, I can’t imagine doing something organic, asymmetric or with more detail. Thanks for the amazing lessons on perspective, Marshall!