Hello LUIKINHO. Good job on finishing your first homework.

Lines

On the first page of your 'Superimposed Lines', there are fraying on both ends in your lines which shows that you started quickly without planning your lines. Also, the lines are wobbly. But in the second you made more confident and less wobbly lines while planning before starting since there is less fraying at the beginning. I can see an improvement on your lines as they get more confident and less wobbly in the 'Ghosted Lines' and your 'Ghosted Planes'. By the time you get to the boxes, your lines look much better. However, there are still some arching and wobble in your lines. My advice for you is to try being more confident by drawing fast and from your shoulder (if you are not already doing it). Going fast prevents your brain to get in the way of drawing and by drawing from your shoulder you can get a wider range of movement that helps getting rid of arching lines. Confident and straight lines are more important than accuracy. You can gain accuracy with more practice. For now, don't worry about overshooting your lines as long as your lines are straight. And work on your accuracy as you keep doing these exercises as your warmups.

Ellipses

I like your ellipses, especially on the second page of the 'Ellipses in Planes' and 'Tables of Ellipses'. They were drawn through at least 2 or 3 times, they look confident, evenly shaped, and they are sitting snugly in their allotted spaces.

However, in your 'Funnels' some ellipses are less smooth and less confident. Don't focus on accuracy too much for now since it affects the smoothness of your ellipses. As you become more confident, you can work on your accuracy as well. Other than that, your funnels look good, the minor axis cut the ellipses in two halves, and this is great.

Boxes

In 'Rough Perspective' it is good that you paid attention to the horizontal and vertical lines as most of the horizontal lines are parallel to the horizon and vertical lines are perpendicular to the horizon. As for the correction lines, they are not very visible, maybe it is because of the color of your pen, but from what I can see they miss the vanishing point quite a bit sometimes. Did you use the ghosting method here as well? Also, there are still some arching on the lines. If you tend to draw arching lines, you can try arching consciously in the opposite direction also don't forget to draw from your shoulder. I also see some unfinished boxes. Try to finish what you started even if you know it won't turn out well.

In the 'Rotated Boxes' the gaps between the boxes should be kept consistent and close. This way you can use the neighboring edges to figure out the angles of your new box's edges. This explains how to figure out your new edges by using the already existing ones. Also, some boxes not rotating. You should check this explanation. I suggest you reread the homework material for 'Rotated Boxes' and watch the youtube video where Uncomfortable demonstrates how to do it.

Your 'Organic Perspective' seems good. On the first page, the boxes that should be closer to us could be bigger but you already drew them much bigger and better on the second page so good job. There are few perspective issues but once you get to the 250 box challenge you can work on those problems.