Hi there, looks like you are off to a good start!

Lines (overall): You do a great job of starting your lines at the point you want to start at, and they look really straight in the ghosted lines and planes exercise. However, they get a bit more wobbly and repeated as you move onto ellipses and boxes since you are trying to be more accurate. Some lines were repeated in the box exercises, which is something you want to try avoiding. Accept your mistake and move on. You should want to prioritize drawing straight lines (for boxes) and smooth lines (for ellipses) to train your muscles. Accuracy will improve with practice. I also want to point out that on your ghosted planes exercise, it looks like not every line was plotted out. It is good to get in the habit of plotting out each line so you can get more practice in using the ghosting method.

Ellipses: Solid start. You do a good job of keeping them aligned (major axis slanting at same angle). A few of your lines look kinda wobbly here and there, just keep it in mind. Prioritize drawing training your muscles to draw confident ellipses (smooth ovals with no wobble) and tighten them up. Accuracy (hitting boundaries) will improve as you keep practicing. Side note, some of your ellipses on your earlier assignments were drawn through more than 3 times, but on later assignments you cut it back to the recommended 2-3. Keep practicing 2-3, anything more is wasting your time.

Boxes: Good job overall. Want to compliment your lines horizontal and perpendicular to the horizon line on the plotted and rough perspective assignments. (I noticed the one box on plotted perspective was outside the area between the two vanishing points, which I'm guessing is so you can see how boxes become distorted when placed outside the VP's.) Whoa, good job on the rotated boxes! Nice convergences and using nearby lines as references. And for organic perspective, you seem to understand how the objects location in 3D space corresponds to size. (One minor nitpick is that you didn't completely draw each box's front faces. It's good to get in the habit of drawing out your boxes because it will help you understand better how it sits in 3D space.)

Overall, very nice job! Keep it up!