Hello Haisheep! Hope you're doing well. I'll try my best to give you some feedback to the best of my ability.

Firstly, your lines, most of them look quite wobbly, which is a very common mistake at the beginning. Trust yourself that you can achieve a confident, straight line. Do not correct your line as you go, execute your line as one single stroke. Your arm will eventually get used to this motion and your lines will be more accurate over time.

As for your ellipses, they definitely can be tricky, and you performed well on some of them, especially on the Ellipses in planes exercise, great job! As for the Tables of ellipses exercise, though, I started noticing some wobbliness. Try not drawing too slowly or carefully. Ghost through your ellipses and familiarize yourself with the motion, this will help you mantain confidence needed to achieve a smooth, even shape.

Lastly, your boxes, on the Rough perspective exercise, I noticed that some of your horizontal lines are not parallel to the horizon. Remember that in one point perspective, all horizontals must run parallel to the horizon line and verticals must run perpendicular to it. In addition, in your Organic perpective exercise, I noticed again some wobbliness on the swoopy lines where you place your boxes. Remember to commit yourself to confidence instead of accuracy. Don't overthink the direction of your line way too much and let it flow.

I also noticed you tried to repeat some of your lines on the last exercise. Accept your mistakes and move on. Accuracy will come over time, hang in there!

That it from me. :)

Have a nice day and good luck in your journey!

Eiji