5:00 PM, Monday June 8th 2020
If you can you should really switch to ink as explained here: https://drawabox.com/article/ink
Plus if you continue in digital, there's a very high chance your future posts won't get critiqued. I'll give you some feedback but I won't mark your lesson as complete, since I'm not sure if I should because there may be digital mistakes here that I'm not seeing since I'm unfamiliar with the medium.
I looked through your work and I it's a little hard to judge your actual skill level since the lines are all of the same width. Line weight can reveal quite a bit as to what mistakes you're making so I would recommend that if you're going to continue to use digital consider drawing with a little pressure sensitivity. Also since that you said you sometimes did Ctrl+Z out of habit
P.S. I have no experience with digital media btw
Anyway here are some stuff I noticed:
Line work:
Your lines are pretty nice. They're smooth and confident, though you're lacking in accuracy that's perfectly normal. With more mileage you'll get much better at it.
Elipses
Your ellipses are also pretty good. They're drawn with confidence and I can see you made a good effort to keep your ellipses centered around the minor axis in the funnels exercise. When drawing ellipses though only do 2-3 passes (2 times preferably). In your submission you go over them 3 or more times.
Boxes
The boxes themselves look good, but it looks like you aren't plotting your lines (placing a start and end point), especially for the organic perspective exercise. Don't forget to do this as plotting out your lines is important for applying the ghosting method. Also if you are to continue to use digital for Drawabox, never do Ctrl+Z. If you do Ctrl+Z then do Ctrl+Y hehe.. This way you're able to better mimic the preferred medium to be used for this course (ink), and thus get closer to the same benefits that you would have gotten if you used ink. Also it's only a very minor issue as it seems for your case but don't try to correct a wrong line. Don't repeat lines. No matter how off a line is keep it as if it were correct and move on.
Anyway good luck! I still recommend you do the exercises in ink though. Draw a Box has 50/50 rule anyway where you're supposed to spend the other 50% of your time drawing for fun. I recommend that you spend the 50% of your fun time drawing by doing it digitally and the other 50% by doing DaB with ink. Rather than doing 100% digital.
If you're really dead set on doing only digital though then.. ok. move on to the 250 box challenge, and don't forget to keep doing the previous exercises as 15-20 minute daily warm-ups. Don't neglect your warm-ups! If you're consistent with your daily warm-ups you'll be surprised by how much you'd have improved in the future.
Next Steps:
I can only confidently mark this lesson as complete if you do the following in ink:
1 page of superimposed lines
1 page of ghosted planes
1 page of ellipses in ghosted planes
You can choose to ignore this though if you really are dead set on only doing digital and nothing else. Just be aware of the risks you'll be taking by doing DaB digitally and be prepared for them. Move on to the 250 box challenge and keep your previous exercises as warm-ups.