Lines

In the superimposed lines when drawing the line after ghosting to confidence, place the pen at the start of the line. This will result in the same starting point for all 8 lines. Some of your longer lines are less confident, It looks like you drew them slowly, or not from the shoulder. https://d15v304a6xpq4b.cloudfront.net/lesson_images/5bcda336.jpg. Those lines resemble the top lines in the image. You should ghos the line until confident with the motion then speedily draw in the line, do not draw it slowly.

I see some confident ghosted lines, a number are not confident. Remember to ghost the lines until confident with the motion and then speedily draw in the line, all from the shoulder. Ghosted lines of the ghosted planes also lack confidence, ghost and speedily draw these too.

Ellipses

First thing in ellipses should be drawn through a minimum of twice and maximum of thrice, yours are not drawn through at all. https://d15v304a6xpq4b.cloudfront.net/lesson_images/a76a8906.jpg.

Your ellipses lack confidence, they look like you drew them slowly, which has resulted in bends and corners on their circumference. Instead of smooth circular lines. You should ghost all ellipses , ghost the ellipse where you want to draw it until confident with the motion. Once confident with the motion, speedily draw in the ellipse drawing through 2 to three times. Commit to this circular motion and do remember to draw from the shoulder.

Boxes

In the plotted perspective exercise the first and last panel look good. Remember the vertical lines you first place are perpendicular to the horizon line. The leftmost box in the midle panel is distorted, this is because you should keep all boxes between the vanishing points. If it it beyond them, then the box will be distorted. Your boxes is slighting further than the left vanishing point, which has resulted in a slight distortion. https://drawabox.com/lesson/1/15/distortion.

In the rough perspective exercise, keep in mind that the horizontal lines of the boxes are paralell to the horizon and the vertical lines of the boxes are perpendicular to the horizon. Some of your horizontal and vertical lines dont follow this which has resulted in boxes like this https://d15v304a6xpq4b.cloudfront.net/lesson_images/6bac0e3b.jpg and not like the exercise. So remember this about your lines of the boxes.

For rotated boxes, Copy the video lesson line for line.

Organic perspective looks good, just do not repeat lines. You plot ghost and draw if the line comes out wrong , move on to the next line.

I will ask for revision

1 page rotated boxes, copy the video lesson line for line

1 page rough perspective, remember horizontal lines of the boxes are parallel to the horizon and vertical lines are perpendicular to the horizon.

1 page, freely draw ellipses, here take a page and fill it with touching ellipses of all sizes. Ghost all of them and draw them with speed.

1 page table of ellipses, keep ellipses touching, draw through 2 or 3 times.