Hi Whisperjellyfish,

Some of your lines have arched. Make sure your drawing with confidence from your shoulder. You shouldn't be course correcting your lines part way through. You should try improving your lines during warm ups. If the problem still persists you could putting in conscious effort into arching your lines in the opposite direction to keep them straight.

Your ellipses are great!! If I have to nitpick then some of your ellipses in planes miss some of the edges. Makes sure you're ghosting to get all the edges in, then commit to the ellipse. Some of your lines along the minor axis of the funnels are slightly off centre, making it harder to gauge whether they're symetrical or not. However, you clearly knew the goal of the exercise so I don't think this is a major issue.

For your rotated boxes some gaps between the boxes are good, other times it's a little too large. Personally I also think the curvature of the sphere should be slightly more dramatic so that it's easier to see the rotation of some of the boxes. All in all, however, you did this exercise very well.

This is a very nicely done lesson one, you deserve to move onto 250 boxes to complete your understanding of perspective!