Well done for starting your drawabox journey Killer. I am no expert but I'll leave my two cents in a hope it will help.

LINES

1) Your lines look, overall quite good, well done. There is some fraying at the end, however this will lessen over time. The most important thing is you draw from the shoulder confidently. And it seems you are doing that.

2) In your ghosted lines you often didn't start your line on the dot you had already placed. Again, if you don't hit the dot you were aiming for, but drew confidently, resulting in a straight line. That is fine. But you should always start your line on the dot.

3) Your ghosted planes are all good.

ELLIPSES

1)You going over your ellipses two times so well done there.

2) I can see the effort you are putting into ensure they are touching fitting in the spaces required well done.

3) The ellipses in your funnels are mostly split in half which is fantastic. However your minor axis tends to tilt away from its starting position. As in they start off facing upright, and they slowly twist over time. Keep an eye on this and continue to ghost and your ellipses will be getting better in no time.

BOXES

1) Your plotted perspective is all good.

2) Your rough perspective is fine. It may look bad, however thats how we learn, by making mistakes.

3) Rotated boxes was a good attempt. That is a very challenging task. I can see you stopped drawing through your boxes as they got further away from the centre. It does get very confusing with the amount of lines packed in, however it will help you resolve the 3d shape in space and is required almost always.

4) The organic perspective is fine. The only comment is to not be afraid to draw bigger on your boxes. Especially coming into the 250 box challenge.