Hello :) I started Proko’s figure drawing fundamentals a little less than a year ago and have reached the landmarks stage. I’ve been continuously practicing boxes on the side, and recently came across Steven Zapata’s box men course. I’ve started drawing box men, applying my knowledge of perspective from the Marshall Vandruff’s old perspective course, and Joseph D’Amelio’s ‘Perspective drawing handbook’. I’ve been trying to improve drawing box figures from memory, by thinking more about how the body actually moves (joints rotating or moving like a hinge). I’ve gotten used to drawing boxes that connect and move in relation to one another like a hinge, and haven’t been pushing to apply other body mechanics to the box figures. In trying to fix this, I have started drawing boxes that rotate in more than 2 ways – rotating on the ‘y’ axis, then rotating on either the ‘x’ or ‘z’ axis to create inclined planes, and then rotating the inclined box. This is where I’ve run into an issue of understanding perspective, especially when it comes to rotating the box on an inclined plane. I know that the vanishing points on an inclined plane heads towards the vanishing trace. But what happens when you rotate the box whilst it’s on a vanishing trace? From what I’ve gathered from D’Amelio’s book, a vanishing point of an inclined plane can have its own ‘horizon’ line? What happens when an inclined box is rotated? Does that mean the vanishing points spin on both the eye level/main horizon line, and on the vanishing trace ‘horizon’ line? I’ve attached an image to explain what I mean. This was my own experiment to see if that’s how an inclined box would spin in space, so I know it’s not correct. If someone could offer some sort of explanation as to how this rotation works, that would be wonderful. I’m not sure if I’m over-complicating and over-thinking it, or if there’s a really simple answer to it. If anyone also has some learning resources on this, could you please share them? This is a long post, so thank you to anyone who reads this :)