What's that? I should stop stalling and get back to the 250 box challenge? ... Fine one more critique and then I'll sit down and allow you to crush my soul. Happy?!

Superimposed Lines: Good. The lines are only frayed on one end and by all accounts are relatively straight.

Ghosted Lines: Good. All appear to be one confident stroke. Just remember to take you time to reposition you page as needed to get the most comfortable stroke from your shoulder.

Ghosted Planes/ Ellipses in Planes: Good. There is no wobble to your lines (Except for one instance) and the lines themselves are pretty accurate. Ellipses are solid with majority of them touching all four sides of the planes and all have been drawn through twice. Also kudos to you for experimenting with so many different angles.

Table of Ellipses: Good the pages are packed with Ellipses with only a few instances of overlapping and bleed-out past the border. Kind of a nitpick but... everything looks so nice there is little else to do.

Funnels: By in Large Good: Some of the Ellipses are not touching. But again they are mostly touching with minimal overlapping and the Minor axis accurately splits the ellipse in half.

Plotted Perspective: Everyones favorite. Spot on.

Rough Perspective: Solid. Line quality takes a bit of a hit but this is the most complicated of the lessons thus far. Keep in mind that all horizontal lines are parallel to the horizon line and all vertical lines are perpendicular to it. Take special care when plotting those points, that should help straighten up the boxes nicely.

Rotated Boxes: Impressive. Yeah I'm always super jelly when I see people do so well on this one. The boxes are tight and are rotating neatly. Kudos to you for the the cross hatching, it makes the picture much clearer and easier for folks to critique. If I'm being super nitpicky, it looks like a small few of your lines have a some wobble but again... nitpick.

Organic Perspective: Looks Good. The boxes are clearly changing in size as they follow the curve. This exercises is primarily a primer for the 250 box challenge, which I see no reason why you should not continue to and ultimately succeed at.

Overall Thoughts: Very good work. Just be sure incorporate these early lessons into a regular warm-up so you stay sharp. Cheers and Happy Drawing.