Hi, I'm still fairly new to reviewing, so I hope this is helpful. I try to follow this guide.

Lines

• Superimposed Lines: Good work here, very little wobbling and only one sided fraying, there is confidence in the straight lines.

• Ghosted Lines: Nicely done, very little over-/undershooting. There is some slight wobbling/arcing here and there. To counteract the wobbling remember to execute lines with confidence, it's ok if you don't quite hit the endpoint if it results in a straight line. For arcing it's recommended to consciously arc the arm slightly in the opposite direction.

• Ghosted Planes: Nicely done as well, though some wobbling/arcing still persists.

Ellipses

• Ellipse Table: You definitely got the idea of placing your ellipses with intent! However try sticking to drawing through your ellipses not more than 3 times, preferably only 2. Any more will make your result look messy if you stroke control isn't that good yet.

• Ellipses in Planes: This looks mostly well done. I'd only like to remind you of not drawing through your ellipses more than 3 times.

• Funnels: Nice work here, nothing to add.

Boxes

• Rough perspective: Good job. Width and height lines are mostly parallel and perpendicular to the horizon line, respectively. Line correction method was applied the right way. There lines seem a bit less confident than previously, doing some ghosted lines as a warm-up is recommended.

• Rotated Boxes: The rotations are mostly evident, remember when drawing a new box to actively use the closest edges of existing boxes to approximate the edges of the new one.

• Organic Perspective: The is a tendency for skewed planes and isometric projection, but this is something you will work on in the 250 boxes challenge.