9:38 PM, Saturday August 22nd 2020
Heyy congrats on completing Lesson 1! I just finished it myself too :)
So, abou your lines, nothing to say besides you've done an exceptional job! Especially that 2nd page of SIL there are some very impressive thick strokes there! Your planes are also really well done, nothing to add.
Now your elipses are also pretty good, the only thing I'd suggest is for you to work on narrower elipses, like elispes that have a very small minor axis. Yours feel like they're all very uniform, and I feel you'd benefit from doing every angle possible as that'll help when you're working with 3D shapes that can have any angle from 0 to 90. I feel you're not going under like 30 or 20 degrees.
Your rough perspective it's very good too! There are a few sips here and there, where boxes don't quite alignn their edges, mainly like vertical and horizontal edges that you made diagonal so that the corners would meet. But that's common I guess, I made that mistake on several of mine too haha Your vanishing points were pretty good too, a few slips, but thats totally expected.
Now your rotatin boxes... first thing that jumps to me is how big all of your boxes are... the biggest face should be the one in the middle; every face other than that should get progressively smaller as they turn away, so on yours it feels like the boxes are either growing in size or not rotating as much as they should. The actual mistake that I see is that you're making all your edges that have the same VP visually parallel, when the outter ones on the rotating boxes should acually be a lot more extreme as they go to the same VP as the inner ones... hope I made sense there haha But very good job overall, that exercise is a freakin beast!
Your organic perspective is also really good! The only thing I'd add is that a few of your furthest boxes seem to have the same size, even though they're getting farther away, so it seems like they're actually growing in physical size as they get farther. Try to keep in mind that they should always be a bit smaller than the previous one when they go off into the distance.
That's all, very good job on all of them and again congrats on completing the lesson, hope I could be of some help!
Next Steps:
You have a really good understanding already, but I'd still recommend the 250 boxes challenge for practice, mainly because of the rotaing boxes exercise of yours, I think you'd benefit to turn some more boxes in space :D