Hi, welcome to Drawabox. I will be critiquing your work.

Before we start I want to say that it is better for the images to be sorted in order. Currently it is done in reverse order with the rotated boxes page at the very end. For future submissions keep this in mind.

Lines

There are wobbles on some lines, but it looks like it gets more confident the further you are in the lesson.

While not a complaint of the exercise itself, I think you could have decreased the space around the ghosted planes. The exercise page itself suggests to put the planes closer as written here

Ellipses

Your table of ellipses has too much columns. While this is not a problem or mistake of the exercise itself you should still follow the instructions. Other than that it looks great, you were able to fit in the ellipses nicely and packed tightly, but I did noticed something else which is…

Some of your ellipses in tables of ellipses are bumpy instead of smooth. Remember to prioritise smoothness over accuracy.

Some of the ellipses in the funnels exercise are not split into 2 symmetrical halves. This is more noticeable for the ellipses at the ends of the funnels.

Boxes

While the rotated boxes looks a bit messy, you still tried to rotate the boxes correctly. Remember that this exercise is not for making good looking boxes but to introduce a foreign concept that you are probably not able to do. The biggest issue I see here is the upper-left corner of the exercise. The spacing between the boxes is much farther than the other exercises, the lines of the boxes are not drawn with the neighbouring edges (This is a bit confusing, so I’m going to link what I meant here), and you did not crosshatch the sides of the boxes. Other than that the exercise is good enough for now.

There are some perspective issues in organic perspective. Keep this in mind for the 250 boxes challenge.

The things I pointed out are not too important to request any revisions. I think you have shown enough understanding of the material and are ready to move on to the 250 boxes challenge. If you have any further questions feel free to reply to me.