You have a page of superimposed lines missing, careful with the number of pages in the future.

Lines

Lines are mostly good, but they are a bit wobbly.

In these exercises, you should always prioritize confidence over accuracy.

A wobbly line will always be worse than a confident line, no matter how off the confident line is.

If you take a look over the ghosted lines notes you'll see the levels of lines:

Level 1: Line is smooth and consistent without any visible wobbling, but doesn't quite pass through A or B, due to not following the right trajectory. It's a straight shot, but misses the mark a bit.

Level 2: Line is straight, smooth and consistent without any wobbling and maintains the correct trajectory. It does however either fall short or overshoot one or both points.

Level 3: Line is straight, smooth, consistent without any wobbling. It also starts right at one point and ends exactly at the other.

As you can see, wobbly lines aren't mentioned, which means that they would be worse than level 1.

I can also see you got some lines with fraying on both ends: When starting a line, you should carefully place your pen on the start of each line, so only a maximum of 1 end can fray. Plan each stroke you make carefully.

Ellipses

Ellipses look p good, though they get a bit wobbly as well. Just like with lines, prioritize confidence over accuracy. You got some ellipses with pointy ends too, remember that a ellipse must be able to get cut in the middle in 2 identical halves, one side can't be different than the other, and it must be smooth.

Boxes

Boxes look mostly good, but you're repeating some lines. No matter how off a line is, don't repeat it, keep going as if it was correct.

On rotated boxes, some of your boxes weren't actually rotating, careful with that, this mistake is explained here.

On organic perspective I recommend doing more overlaps. You can clarify after the overlaps by adding a confident, drawn with the shoulder superimposed line on the part of the silhouette of the boxes that overlap. Perspective on them has issues but you'll work on it on the box challenge, so don't worry about it!