Hello YJH, and welcome to drawabox. Congratulations on finishing lesson 1.

Lines - Your superimposed lines look great, there is no wavering or fraying on both sides. I like the fact that you added some variety in your lines, keep doing that. Your ghosted lines are also good, though, I do notice a bit of arcing in some of your lines, remember confidence>accuracy. Finally, ghosted planes, they look really good. I like how you varied the size and shape of every plane, really good stuff.

Ellipse - In your table of ellipses, try to make your ellipses so that they fit snuggly together. I do see that you are drawing through them at least 2 times so that is good. Also be sure to apply the ghosting method correctly to these as well. Ellipses in planes look good, it does seem like you are striving for the ellipses to touch all four edges of the plane. I must say, your ellipses look really smooth. Your funnels are good, just try to remember to have them touch the sides of the funnel.

Boxes - Good job on both plotted perspective and rough perspective. Your rotated boxes look beautiful. Lastly, you just forgot your hatching. Also there are some boxes with dramatic foreshortening in organic perspective, just remember to keep it shallow. Really great job overall.