Hi~

One of the most noticeable things in your homework are the wobbly lines. It is better to miss a point than draw a wobbly line. Try drawing a bit faster, it does not matter if you miss the point, when you are starting is good to prioritize the confidence over the accuracy. Also I noticed some arching lines here and there so remember to draw from your shoulder, it is hard at the beginning but you will need it :)

Your ellipses look good for me. In the planes most of them are touching the sides, be more careful with the funnels, if you repeat the exercise. The middle line of the funnel is supposed to cut the ellipse in two symmetrical half and yours are a bit off. Another thing, I am not sure of how many times you went through the ellipses but try to not over do it (three times is good enough).

Plotted perspective looks good. The rough perspective exercise is kind of hard for a first time (at least it was for me). Some extended lines are really close to the VP and the length of the boxes is parallel to the horizon while the width is perpendicular to the horizon. The rotated boxes is a solid work, just some boxes from the bottom are a bit too separated from the neighbor ones and some boxes from the sides look a bit distorted. The hatching is a little messy, even the lines for the hatching need to be done with a lot of care and with the same method used for all of the other lines in your work. In the organic perspective there are some distorted boxes. You can add line weight to clarify which one is in the front.

Overall, good work. Just take in count what I've said about your lines. Draw fast and with confidence, if you do some mistake try to not over-think it just keep moving forward and practice will surely help you with the accuracy ;)

That all, if you have any question or there are anything that you don't understand feel free to ask.