The lessons on arrows look amazing. I'd like to catch up with these, Any chance of postponing the deadline?

Here are some of my Labeling for Spacial Understanding attempts. I found this tricky, I'm not 100% sure I'm getting it, Any feedback would be great, thanks for the lesson. :)

Here are my Label XYZ attempts. Any Feedback would be appreciated.

Thanks for Demo 3 1. The Darks I think were shaded with a 6B up to 4 mins. 2. Then the Lights were 4B 3. Back to 6B after the Kneaded Eraser Highlight, to touch up the Darks at the end. The pencil tip helped spot the pencil changes, thanks. :) I'm not sure about when a line around the outer circumference would be considered an outline taking away from the shading effect. Any advice would be great.

Thanks for Demo 4. Is that a Conté à Paris Pierre Noire Sketching Pencil 3B ?

Marshall, thanks for your explanations on these orthos by everyone. Although this course is about drawing freehand, I appreciate you explaining the technical aspect too and the use of drawing to communicate. Although I haven't participated as much as intended, I know more now than at the start. On a positive, with practice and these lessons I can only improve.

Stan, Thanks for another great Sphere demo. How do you prevent and Occlusion looking like an outline?

Amazing Sphere, it's like a White Billiard Cue Ball. Thanks for the Demo.. Was the demo drawn with the paper vertical or flat on a table? What's you thoughts with that respect? I noticed in your previous project video the cast shadow was drawn as an ellipse as you show here too. It kinda went wrong for me because the sphere looks like it was rolling off the cast shadow. What determines the shape of the highlight? This sphere shows it as a square, I thought it would be round in shape because the shape is round or is it more to do with a reflection?. Thanks Again.

I'm sorry I missed the deadline ! Here's a sphere attempt. I way over worked on this Sphere which was probably not very productive as the shading isn't great. It looks as if the sphere is falling off the cast shadow! The occlusion at the bottom looks like a line is that acceptable or should the same tone spread out more? I'm looking at the highlight, I'm not sure how to place it. It was a bit of a guess. Is it okay to draw a line from the light source through the sphere to help identify it's path and highlight? Any feedback from anyone would be appreciated. Thanks

Love this, as do this perspective course. :)