Lines and ellipses have a tiny bit of wobble, 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.

On ellipses it's the same, don't worry if you need to sacrifice accuracy to improve them. Make them as confident as you can.

Boxes look pretty good in general, 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.