Don't worry about it fis! Ballpoint pens are pretty good for the lesson 1 and box challenge, so it isn't much of an issue. They start being important in lesson 2, but even if you can't get one then, keep going, a ballpoint will always work nicely!

Lines and ellipses are pretty good in general! You do have a little bit of wobble on some lines, so let me expand on it a bit!

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.

Same goes for ellipses, yours have a tiny bit of wobble, confidence over accuracy always!

I recommend drawing through them only 2 times as well, to keep them cleaner.

On boxes you're doing a good job too, though you are repeating some lines, no matter how off a line is, don't repeat it, keep going as if the lines were correct.

And on organic perspective, remember you can add lineweight to clarify overlaps between boxes to make the relationships clearer.