I'm just a beginner (repeated lesson 1 twice) just like you so take my critique as a grain of salt. Your homework all look good except ellipses and a bit of lines. First things first, in your ghosted lines homework, there are wobbly lines especially the longer lines. I know it's a bit hard for us (yours is better than my first attempt even to my second attempt) but I wanted to point it out just in case if you want to improve in it.

Next, your ellipses homework have some problems. First, in the table of ellipses homework. you've drawn most of them more than 2-3 times (looks like you've drawn them 5-6 times). You should draw them with confidence and thought even if it doesn't look good, just draw them 2-3 times and move on. Also, in your ellipses in planes, some ellipses are drawn once, you should not do that. Second, you should draw them within the boundary. It applies to all ellipses homework, draw them within the boundary. Also, you don't have a problem about ellipses touching to other ellipses.

If you want to know what I think about your boxes. They all look good especially the rotated boxes(10x better than my second attempt). But, you definitely want to put a bit of line weight to some of your organic perspective boxes (I put line weight too much to my organic boxes). Your boxes will obviously improve tackling the 250 boxes challenge.

Overall, your homework all looks good. You got the pass for me even though my homework haven't critiqued yet.