Skyclops

As said by Allipses you do seem to have a good understanding of the course content.

Superimposed lines

There is a lot of fraying on your lines. This is okay but it's something to make sure you work on, we want to strive to keep the fraying mostly toward the end of the line and the end of the stroke, you go off course quite early in a lot of these and it. Keep this exercise as a warmup and when practicing experiment with going faster for the whole page or slower for the whole page to help you better understand when you naturally start to wobble.

Ghosted Lines

You seem to understand the concepts fine here, similar to Superimposed lines, just practice going faster or slower during warmups as you do have a bit of wavering in your lines, generally this shows you might be going to slow and are watching the "path of the line" and not the destination. On longer lines I would recommend practicing watching the destination point you have marked and ghost your hand as best as you can to the point before committing with a confident stroke of the arm.

Remember, ghost from the start point to the end point only, don't ghost back and forth, only focus on the "start going to the finish." If that information is unclear please review the content in the exercise, the 'teacher' speaks about this in both the video and the text.

Elipses in planes/Ghosted Planes

Specifically for the planes just keep the previous advice for ghosted lines in mind. The planes look good.

All Elipses Exercises

You seem to have an understanding but you are drawing through your ellipses far too many times. Review the content in Ellipses if you feel you need to, but my suggestion is to review the "things to remember" section in Table of elipses homework https://drawabox.com/lesson/1/tablesofellipses as well as watch the video provided.

Perspective and Boxes

Good understanding of the exercises, please be careful going forward to avoid drawing over your lines more than once. If you need to help yourself see through the mess of lines, try to instead fill in the "visible" section of the box, like the example homework shows filling out one plane of the box to give the illusion of depth.

Your lines throughout these exercises are looking great! Rather consistently confident and accurate. There is occassional wobble and hesitation that I noticed when you were in rough perspective, but it happens, we're not aiming for perfection, it's just something to keep in mind! Always thinking about confidence and follow through. Hope you get your fineliner in, and if you can have some extras for backup! you'll be going through them I have no doubt.

Just as Farhanthenerd suggests I recommend moving on to 250 boxes Challenge! Good luck on your progress.

So First, my take on the 50% that I got from the course is that you draw for fun, draw for the sake of drawing without worrying about whether what you drew is right. Uncomfortable mentions that using reference is not a bad thing, but you shouldn't Draw from reference when doing this 50%. The point of the 50% is to help yourself stop thinking about how it needs to look. Get comfortable with drawing just what you have in mind. The bad thing about using references and taking from life, is that we often get heavily stuck in trying to analyse what we're looking at. That means you're engaging and trying to learn, you're not giving your brain time to rest. That's my perspective on what I think Uncomfortable is trying to have us do with the 50% rule. If you can't think of what to draw. Just go find a "prompt generator" Just a single word. Like Bird. and just draw that, don't think about if it looks wrong, just draw what you think a bird looks like and keep doing it. Don't worry about the result either, that's why I wouldn't recommend sharing them with your lesson submission. Because these are personal drawings, they aren't meant to be critiqued because they aren't meant to be right. They're meant to just get you to doodle and relax.

Struggling with your confident lines is just going to take time and practice!! you're on the right path. Just make sure to stay aware! so that you can consciously work on it as you continue through the courses.

I actually think your organic boxes look great! No need to doubt yourself, it's clear in the organic boxes exercises that you have small boxes going to big boxes, I think the pacing does a great job to convey going back in space. The only critique I had on the organic boxes was just being aware that you were drawing over the same line more than once, that is all! Which I did the same thing in my exercise. It's something for us to work on.

Good job though, I wish you luck on your 250 boxes!

Lupursian has provided great feedback, I wanted to add to it, in your elipses, mostly in your funnels exercise, you seem to draw through your circles far more than 3 times. In the future just try to make sure you keep it clean, keep to drawing over your elipses 2-3 times as Uncomfortable mentions in the elipses Tables exercise. You may want to review if you do not understand what I mean.

I want to focus on your message you submitted with your homework first!

I know i need more practice but please Critique.

Try not to worry about this! The instructor 'Uncomfortable' provides some insight into this through the lessons. I would recommend reviewing the videos through Lesson 0 as most of the content in there has been very helpful to me, specifically I would refer to the section "Failure is a beginner's Job" Throughout this course, we will be failing, and this is very important to understand.

Should i draw in a upright posture ?

You should draw in whichever way is the most comfortable to you to make confident lines. Posture is important in the long run, so that's good that you are thinking about it. Good posture is going to help you draw for longer without aches and fatigue, however, it is up to you if you think keeping good posture is more important than being in a position that makes it easier for you to make a confident line. - I think Lesson 0 or somewhere in the beginning of Lesson 1 Uncomfortable also covers some information about better posture, how high your arms should be to make sure that you are able to make full use of the motion of the shoulder. So maybe it would help to go back and review the written and video content of these courses.

I try to draw simple things from real life

Drawing from life is good, but this isn't part of the assignment, I wouldn't recommend putting drawings in the homework submission. For drawabox focus on the exercises. If you did this real life drawing as part of your 50% to just draw for the sake of drawing, good job! But you may have missed the point of the 50% rule. So I would recommend again, going back through Lesson 0 to help you better understand what Uncomfortable means by that. You can also join the community discord if you have additional questions or are confused.

Okay, onto your Exercise sheets.

Superimposed lines:

The coursework suggests 2 sheets of super imposed lines, try not to worry about doing more, and only submit the 2 that are required. Uncomfortable speaks about this in the lesson content, so I would suggest watching the video and reviewing the text again if you are unsure why.

Your lines are good! Make sure your starting point of the line does not fray. This spot should be mostly accurate because you can take as much time as you need to make sure you set your pen down where the line needs to start.

Ghosted Lines:

This looks good! You followed the instructions of the exercise well.

Ghosted Planes:

It looks like you might be a bit more hesitant in these, there is a bit more wobble, remember to keep the motion of your line strong and confident! Otherwise great work still.

Table of Elipses:

Well done on the first sheet, you followed the instructions well.

On your second sheet of Tables you have elipses inside of your other elipses. Uncomfortable explains why this is not recommended in the course content, make sure to review that lesson text and video again to make sure you understand why.

Elipses in Planes:

These look good, looks like there is still some wobble and hesitation in your lines. Make sure you are rotating your paper to make each line as comfortable as you can. The elipses are good, I can see you are aiming to have the edges of the elipses touch the borders of the planes

Funnels:

Looks good, you followed the coursework and are checking your minor axis as well.

Plotted Perspective:

Straightforward, you followed the coursework, looks clean and well done.

Rough Perspective, Rotated boxes, and Organic Perspective:

I group this together because I have the same advice for each. You seem to start sketching over the same lines. Remember to only draw your line once and move on to the next, it doesn't matter if it failed, if it was inaccurate or it doesn't look the way you wanted to. Move on to the next line.

Otherwise I think these all look pretty good!