Here's that critique you ordered, fresh off the grill!

LINES

1) imposed lines

I'm seeing here a lot of wobbliness, which is likely caused by you trying to correct your lines as you go. Don't worry about doing this, you want to have confident lines first, no matter if they are accurate. Follow your line fast and confident, drawing from your shoulder. I promise you that it will get easier as you go, you just have to build the muscle memory. Other than that, the fraying at one end is to be expected, so I'm not seeing any other real issues with this.

2) ghosted lines

Your confidence seems to have improved with the ghosting method, that's good. Your lines, while not always accurate, are mostly straight, that's exactly where you want to be at this stage. If you see any issues with arching and bowing, a good thing to try is to consciously try to arch your line in the opposite direction. Otherwise, these are good for your first page of ghosted lines. Another thing to note, if you mess up a line and it feels too bad to keep, don't go over it again, it's still worth keeping on the page. Your first mark should be your last mark.

3) ghosted planes

Your ghosted planes are largely the same as ghosted lines, so not much I can say on these without rambling and repeating myself.

ELLIPSES

1) tables of ellipses

There's a few issues I'm seeing with these. I know it's hard at first, and you really want to fix your mistakes and messy ellipses, but you shouldn't go over the ellipse more than three times at most. They'll be wonky, and they wont fit neatly, but with fewer times going around, you'll see more of the issues you encounter, and thus you will be able to focus on fixing them. Your ellipses are supposed to be messy and ill-fitting, we do these exercises to fix that. Remember, go around your ellipse two times, three at the most, as this will keep it neat and readable. Other than that, your ellipses do have the issue of floating around in their boxes, your first goal here is confidence, and your second goal is to get your ellipses to fit snuggly, even if they don't look very good at first. We will work on this extensively.

2) ellipses in planes

I see plenty of your ellipses have been drawn through only twice or thrice, which is good. I won't drill you on the previous issues which are still, to a lesser degree, still here. Good job, I'm seeing improvement.

3) funnels

Your ellipses are definitely getting better, line confidence, and accuracy. The minor axis is a little off in a few of the funnels, but the ellipses stay mostly on course, so it's still alright.

BOXES

1) plotted perspective

I see you understood the material well enough, this isn't a very mechanical exercise, so there isn't much to mark. You have a clear understanding of basic 3D perspective, that's very good.

2) rough perspective

Another solid exercise, a few small issues, but nothing that can't be dealt with. Again, if you mess up a line, don't try it again, it usually only makes it messier. I know it's hard, and you just want to try it again and do better, I struggled hard with it early on, but you just gotta take it on the cheek. My only other issue, and I don't know if you just forgot to include it, but the homework does ask for two pages of this. It's a small thing, but it could still help to go over this again with this advice again.

3) rotated boxes

This is another one of those difficult exercises that's weighed against you, despite this you managed to handle it well. Boxes are mostly plotted well, perspective is done well. This is one of those exercises that if I did it again, it would still be hard, so don't worry too much.

4) organic perspective

This exercise was done pretty well for the most part, only real issue is the lack of rotation. It will be awkward and uncomfy, but you really wanna explore different angles of your boxes. Other than that, these are reasonably acceptable boxes, with an extra page thrown in!

CONCLUSION

While there are a few exercises that could use revising, I believe that you overall understood the material, and were able to execute the exercises well. With some more practice, and perseverance, you'll be well on your way!