6:53 AM, Thursday October 8th 2020
Hello GrumpyOwl, fellow art traveler, I hope you are well.
First off I want to say straight up, your work is really good, congratulations. Now, having said that I do feel you're putting yourself at a bit of a disadvantage by uploading to GoogleDrive.
Just from my own experience. it's good practice to put yourself in the shoes of the person looking at your work and to try to make their life as easy as possible. Uploading to Imgur links a preview thumbnail on Draw-A-Box which makes it far more likely that you'll receive feedback and not get skipped over in the crowd of submissions.
Just for your info, I've been working through Draw-A-Box for about 14 months now, I'm currently on the 250 Cylinder Challenge. I can only speak from my own experience, but I have definitely seen my drawing improve, though it is a very gradual process. Anyway, I'll go through your challenge and see if I can give constructive feedback.
I wouldn't worry about your pen size too much, but if you can stick to 0.5 for the sake of consistency, it definitely makes it easier to give feedback.
Your presentation and your line-work is fantastic overall, but I will say, it is hard to tell if you are drawing these lines exclusively from your shoulder as requested. I've noticed that line-work from the shoulder in general tends to be straighter, less wobbly and initially at least, less accurate. If you are drawing from the shoulder then that's great, ignore me but just remember that all lines, including superimposed lines, should be drawn from your shoulder pivot for these exercises.
Overall I think your convergences look good, you have a nice mixture of extreme and less extreme foreshortening and you played around with different proportions. Try to observe box-like forms around your home to get a sense of how extreme the perspective is in real life, it really does depend on the scale of objects and how close they are to your eye.
Well done overall GrumpyOwl, your convergences certainly improved by the end of the challenge and your presentation throughout was one of the best I've seen. Good luck on your art journey!
Next Steps:
Onwards to Lesson 02, which I see you have already submitted :)