Thanks for the comment

You are right, I may have rushed the organic perspective a bit. But it's hard for me to really see cubes in my imagination.

I can see the faces and edges in front of me, but not the edges and the distant faces, I have to test them on paper to find roughly the right line and angle. I am not able of envision with cubes, more with spheres, I hope it will come with practice, I am currently about 100 cubes of the 250 challenge, I have not yet the feeling I would like.

It is the same for you ?

I looked at your homework, I think the quality of your lines is very good too.

Your were really successful with the rotated boxes. And yes maybe a little rush in the organic boxes. The ellipses are fine too, maybe, as I do, more difficulties with little ones, the tracing with shoulder for little forms appears not convenient for me.

And finally, about your challenge, maybe an advice, you have the Y with angles over 90°, but the opposite angle the nearest from the observer, I think have to be over 90° too.

Bye