This is my first critique and I am a beginner as well. I hope you can find something helpful here.

Superimposed Lines: Your starting points are accurate and clear. There is fraying at the end, but with practice this will probably calm down. From what I see, you might be overshooting the mark? I.e. drawing longer lines more often than shorter? Do you feel this? If so, maybe keeping that final target in mind as you ghost and draw will help accuracy.

Ghosted Lines Exercise: Most lines seem confident. I don't always see the dot to indicate the beginning and end? Maybe keep practicing these with a clear dot at the start and end?

Elipses: In the table exercise you are getting the angle of the elipses, i.e. they are leaning in the same direction. Overshooting the space available is tricky. I struggle with this too. Just using it as a warm-up for my art each day.

Elipses within a funnel or cone: To give the illusion of depth, the elipses should become skinnier or fatter. You've done this in some. Just another thing to warm-up with.

Trapezoids: Good job of getting the diagonal and 1/2 way lines to intersect in the middle.

2 pt perspective: Really nice. Clear lines. Boxes are well drawn.

Rough Perspective: Make sure corners meet and then take care in drawing the red lines to measure your work. Even a millimeter or 2 could make a difference.