Hello there Harmin!

Overall, you're off to a pretty decent start.

Lines

Lines are admittedly off to a wobbly. start. It appears you are focusing on maintaining accurate lines, making sure they start and end at the points you have established. As this is an introduction to get you to develop shoulder muscle memory, it's ok to sacrifice accuracy. The primary focus is to gain smooth, confident strokes using your shoulder. And as you develop the muscle memory and become more confident, you can hone in on being more accurate. With that said, as you go through your exercises and into boxes, I notice there are some nice smooth strokes, but they are still mixed with wobbly lines.

Ellipses

Similar with lines, ellipses are off to a wobbly start. There are some nice, decent ellipses that have smooth and confident strokes. Also, be careful of ellipses that turn sharply as you try to fit them in their allotted spaces. Just as with lines, focus on developing the confident strokes first and then focus on accuracy, then finally on roundness. Ellipses are certainly challenging, so don't be discouraged! It'll take time, but continue to practice and try to play with speed a bit (e.g.-speeding them up a bit) until you find a speed that you can control and maintain confident strokes with. Your ellipses in funnels are generally aligned the minor axis, so nice job with that.

Boxes

Before I go into detail of each exercise, I want to point out to be careful not to reinforce/correct lines. No matter how wrong and no matter how tempting it is to correct an errant line, do not do so. To help with this, you can use dots to your advantage and move them as needed (which you are already doing, so that is great). As aforementioned, it's ok to be off on accuracy a bit at this time.

Rough Perspective

The vertical lines are generally perpendicular to the horizon line, and horizontal lines are parallel to it. So nice job in maintaining that. The convergences on the boxes are not too bad either, as the lines of the planes' edges go back on the horizon line near your targeted vanishing point. I would like to encourage you to also try boxes that are further away from the vanishing point.

Rotated boxes

First, congratulations on getting through this exercise! It's certainly a tough one. The boxes along the vertical and horizontal axes are generally [not rotating] (https://drawabox.com/lesson/1/16/notrotating), meaning they are sharing a similar or the same vanishing point. Otherwise, the boxes are fairly well neighobred to each other and you are drawing through each box.

Organic Perspective

As the boxes move away from the viewer, they convey a sense they are slightly getting smaller, so nice job with that. There are some typical issues with a shared set of parallel lines diverging, making the farther edge of a plane larger rather than smaller. But no worries, you will delve into this more in the 250 box challenge!