Pretty good job overall! Lines and ellipses are super confident and good, keep it up like that and you'll nail the accuracy.

For ellipses, try to stick to drawing through them only 2 times, as it'll make it cleaner.

Boxes are pretty good in general, though these have a few issues.

Don't forget to draw through your boxes on this one. You should be able to see the boxes, even if they're covered by other boxes. You can add lineweight to clarify their relationship on the line overlaps after.

And don't forget not to repeat lines, no matter how off a line is, don't repeat it, keep going as if it was correct.