Hello, Resunwonknu:

Welcome to drawabox! Let's see where you can improve.

Lines

Superimposed lines have a too spread fraying. Try to ghost more times before committing to the final stroke. Your lines seem wobbly even at the end of the lesson. Try to make ghosting and execution one phase, it should feel as if someone pushes down your hand while you are ghosting.

Also, you have some arching in the longest lines. This is because you are not comfortable drawing from the shoulder or you are still using your elbow as the rotation point. Try to practice against a wall, with your arm completely extended and simulating forms (circles, boxes, lines...) with your entire arm. Note how your shoulder muscles work and then try to mimic that while drawing.

Planes

You have skipped part of the exercise. The second cross is missing on every plane. Try to read carefully all the lessons and do all the recommended steps if you want to get the most out of this course. You are not going to improve more by rushing through the content.

You also seem to stop marking the corners of the planes at some point. Please, use marks. That's how we can differentiate between a bad execution from a bad planning phase.

Ellipses

It seems that you are drawing them too fast. Try to play around with the speed and also the way you are approaching the motion (clockwise or anti-clockwise). Too much speed ends with 2 ellipses far from each other but falling short will end in bumps on your ellipses. As we want to prioritize smoothness over precision, pick a high speed and start lowering it.

Boxes

Here you did a pretty good job overall (you did fall in the same mistakes commented previously tho). Your construction was decent enough. You got the point in the rotated boxes exercise about how to rotate boxes having neighbors as reference.

You could get some useful insight by drawing through your boxes in organic perspective. Try to follow recommended steps, they are usually a must if you don't have a previous drawing background.

Verdict

You seem to rush through every exercise. Take your time for each line you want to draw, patience is one of the most important things you could learn in this course.

You have some practical issues but I think you will solve most of them following the previous advice through your 250 boxes. Remember to warm up before any drawing session with the exercises you are struggling with. Don't rush through it or attempt to finish the challenge in a couple of days. Take your time and let the knowledge sink in your brain. We learn the most from our experiences while sleeping, have that in mind.

I hope my critique was useful and good luck with the 250 box challenge.

The lines look smooth but it looks like you pressing quite hard which is makeing the lines less accurate.