I can see you are on lesson 2 currently but some of these problems with your linework and ellipses still persist.

plot all your lines , then ghost until you are confident with the motion. Then speedily draw in the line. Do not draw it in slowly. Many of your lines are wobbly for example in the ghosted planes. I assume you are not drawing them fast enough. You should be drawing them with speed. Also do not repeat lines , plot , ghost and draw the line. If it comes out wrong move on to the next line.

Ellipses should be drawn through a minimum of twice and maximum thrice. I see some of your ellipses are drawn through 4 times or mor, it should be 2 or 3 times as in the link. https://d15v304a6xpq4b.cloudfront.net/lesson_images/a76a8906.jpg Your ellipses do look confident, I don't know if you are doing this but when drawing ellipses too. You should ghost the ellipse where you want to place it, ghost until confident with the motion then draw it in with the same confidence you are using now. Drawing through only 2 or 3 times.

The perspective in the plotted perspective is good. In rotated boxes there are only 5 rows and 5 columns , you have 2 extra. AS in the image linked there is the center box then 2 on each side https://d15v304a6xpq4b.cloudfront.net/lesson_images/4018ab0f.jpg In yours you have 3 on each side.

Like wise vertically https://d15v304a6xpq4b.cloudfront.net/lesson_images/6e259e79.jpg there is 2 above and 2 below , you have more than this

Remember you should be using these lesson one exercises as warmups.

https://drawabox.com/lesson/0/3/warmups