You might want to rip the pages before working on them, as those inner edges can get in the way.

I agree with most of what RJHIRAD said, but I don't agree that you should redo the ellipses exercises. I do recommend that you do the ghosted planes + ellipses on planes as a daily warmup. Once or twice a day, one page, front and back. Do it with pencil so you can erase and reuse the paper later.

It's interesting to note that your ghosted planes' lines tend to be very clean and straight, but most other boxes' aren't as much, mostly notable on the perspective exercises. Remember to apply the same technique of the planes to each line of a box.

Something I want you to note on your rotated boxes: you completely forgot about rotating the back faces. Nearly all of them are perfect front facing rectangles, like the one in the middle.

Hi, Just to start off I'm a beginner myself and I just finished submitting my own homework. So consider this as less of an expert analysis of your work and more of a second opinion from someone who's about at your level

1-1:

Looks good. Technically speaking the lesson called only for straight lines but it's all not a huge deal in my(unprofessional) opinion

1-2: pretty damn good imo. Bottom left shows some signs of wrist drawing but it's okay seeing as you've just started up.

1-3: no complaints. Looks good

1-4: It's a little rough imo, Maybe try to be a little slower but still keeping the line confidence up. It's a little too rough to be usable in an actual sketch. Line confidence is less about speed and more about not adjusting your line as you go. Also it looks like you went around 3 or 4 times where uncomfortable went around 1.5 or 2 times. Maybe rewatch the video/read that lesson and try again.

1-5: Same as above, too many time around the ellipse. Ghost more and draw less.

1-6: This is still too many times around but you are getting cleaner. These ellipses are tighter. Apart from that there is no real change in degree of them so that could use some work.

1-7: clean. I like it

1-8: At least from what I see there's a lack of ghosting here, Remember, you can ghost upto the vanishing point to make sure you got the angle right and then just stop at where you actually want the line to end. Some of the parallel lines are actually diverging which shows that you may need to rewatch the video/ go through the lesson again

1-9: I feel like you aren't really thinking in 3D with this one. Remember that as boxes rotate the bottom would fall more and more inwards in perspective as one of the sides would go farther away from the viewer. I'd recommend spending some time just rotating a box of some sort to get a feel for how perspective works. That's something I did with a shoebox that's under my bed. I just spun it around and viewed it from above and below to see how the parallel lines look with one eye closed.

1-10: This is kinda clean. There are a few lines that show signs of chicken scratching (eg: last page bottom right and second-last page large box in the center of the page.) and some boxes look skewed instead of parallel.

In closing, you need to redo a few things but otherwise you're alright. Going from top to bottom I did absolutely see a rise in line quality and confidence. I think you're well on your way to being a great artist.

As a general message to the community please critique my critique as I'm at about the same level and I may have accidentally said something wrong.

Ps.: if you could do me a favor I'd like it if you could check my work in return. I'm waiting to hear if I need to redo any work before I move on to the 250 box challenge and Lesson 2 myself.

I think you're good to move on now that you're done w the revision.