Hi, Yugami :)

LINES

The lines are wobbly, add a bit more of speed while drawing them. Keep in mind that is better to mistake the direction of your lines that drawing them wobbly, you need to build your confidence first, accuracy will come later. The dots used for the ghosted lines on the planes are a bit too big, make them smaller so they would not get noticed after drawing the line. On the planes there are less wobbly lines, you made some progress here. Lastly, on the superimposed lines the longer ones fray a lot in the end so make sure to practice them during your future warm ups, you can also try s curves or spiral.

ELLIPSES

There are some gaps between the ellipses in the tables, they have to be tight within each other and the lines of the ellipses are a bit wobbly, specially small ones. You went through them twice, that's good. On the planes with ellipses there are some ellipses a bit out of the plane but this is a matter of accuracy, which shouldn't worry you right now. On the funnels the ellipses should be cut in symmetrical half so next time you try this exercise make sure to remember this.

BOXES

The plotted perspective looks good. On the rough perspective you used the line correction method, good. This exercise is hard if it is your first time, for future reference remember that the width lines should be parallel to the horizon and the height lines perpendicular to the horizon. On the rotated boxes there are some boxes missing, one on the top left corner and on the bottom there are just two boxes I believe. Also you've could added a bit of line weight to clarify which sides of the boxes are visible. The hatching should be done as other lines, using the ghosting method and being careful to not let them floating on the surface of the boxes, they have to go from one point to other. Could you add the missing boxes, please ? I'm going to put a link here, it might help you a bit.

And the last one, the organic perspective. Here you drew a bunch of boxes, nice! I can see some chicken scratches, that's a no-good. All your strokes should be purposeful, smooth and confident. The boxes are a bit distorted but that's going to change after the 250 boxes challenge. If you repeat this exercise in the future you can add a bit of line weight where the boxes overlap.

I think that's all. Keep working in your confidence, that's one of the most important thing here in DaB, before the accuracy you must worry about your confidence while drawing, it doesn't matter if you make mistakes, try to not worry about them. Draw from your shoulder, do it fast and use the ghosting method for every single line.

Oh, and keep drawing for fun :) (Or you will regret later)

If you have any question or you don't understand something I've said feel free to ask.