Lines: There's considerable fraying in your first exercise and little variation in line length. Remember to experiment with different speeds, as there is both too fast and too slow for drawing, you have to find the sweet spot in the middle. There's little variation in line length on your ghosted lines, too, but it seems you got most of them very close to the end point, which is good.

On the ghosted planes there is visible scratching/scribbling over some lines. That is something you should avoid. If the line ends up bad, roll with it, don't try to fix it. Some lines also have something of a curve, something that should go away as you continue training and doing warmups.

Ellipses: On the table, most of them look good. A few have a more considerable overshoot due to the second or third pass, but that's expected, it's hard to keep in line. Most are well contained, though there is some overshooting out of the frames.

On the planes, they mostly overshoot out of the lines, but some are good and contained.

On the funnel, the middle line is off center, so that makes your ellipses not be "cut" in half properly. Think like this, the line should cross the exact middle of the ellipse.

Perspective: On the plotted perspective, you probably noticed that you ended with overlap on the middle and left boxes. Knowing how that works can be useful in the future. There was some scratching on one line, too, makes me wonder how "wrong" the line looked.

The rough perspective looks good, but there is a considerable number of lines that you drew a second time, others that are curved and lots of overshooting. You got close to the viewpoint for many lines, and that's good.

The rotated boxes are an "almost there" case. You got the idea right, which is important. The outermost boxes somehow look bigger, when they should look smaller. Note that on all four edges, you can almost draw a straight line along the boxes. In a 3D space, this means that if they are rotated, they are all near one another, like glued to a wall, instead of glued to the surface of a sphere. This exercise is hard, my boxes also ended full of flaws, but you don't need to worry too much about it.

Finally, on the organic perspective, your boxes look fine for the most part, properly shrinking as they get farther away along the line. The problem are the lines you drew twice and one box that has a weird face (2nd image, 2nd frame, 2nd from left to right)