2:45 AM, Friday June 5th 2020
Lines
Your straight superimposed lines are looking good, they're confident and you're taking the time to line your pen up with the starting point, which minimises fraying. The curved lines however are slightly less confident, so make sure that you're not focusing too much on accuracy - confidence is more important at this stage.
Next, as you noted, your ghosted lines and planes are exhibiting some arcing but are otherwise confident and well executed. This page should give you some strategies for trying to combat this moving forward.
Ellipses
One thing that is very clearly present across your entire ellipse section is that you're drawing them far too slowly, which is causing a lot of wobbling in the lines. It's particularly evident on the ends of your ellipses or when they're approaching a boundary, so make sure that you're drawing fast enough that your brain doesn't get a say in the matter. Confidence is not the same as speed, but as a beginner, speed can help you fake it till you make it.
Across the set, you've done a good job of conscientiously drawing through your ellipses twice and in your tables of ellipses, you've done a pretty good job getting them tight up against one another. Similarly, you've done a good job of keeping your ellipses within the confines of your planes but remember that this kind of accuracy should never come at the expense of confidence. Keep in mind, an inaccurate but confident ellipse or line can generally be salvaged, there's nothing that can be done for a wobbly one.
Finally, your funnels are actually managing to get a pretty good alignment to the minor axis, though things do get a little skewed on the left hand side of the middle funnel, it's just something to keep practicing in your warm-ups.
Boxes
Starting with your plotted perspective here, you seem to have gone straight for hard mode and might've missed the instruction that this one was to be completed with a ruler. The intention of course being to introduce students that might not be too familiar with linear perspective how to plot things out in a structured way before teaching them to freehand them.
Next your rough perspective is off to a pretty good start. You've done a fairly good job of keeping the horizontals parallel and verticals perpendicular to the horizon line. Your line confidence definitely took a hit here and it seems like you got overwhelmed with the task you were set. Oftentimes, students consider a ghosted line as one unit of effort, an ellipse as one unit of effort and therefore boxes to be one unit of effort. But this is incorrect, it's actually 12 units of effort - one for each line that you draw. So make sure that you're putting the time and planning into each of the lines you draw of your box.
You've done a pretty good job keeping things together in your rotated boxes, though things do get a little further apart towards the ends, which unfortunately makes it harder to place each consecutive box in the exercise. You've managed a good degree of rotation on the first, inner layer of the boxes, however as you've progressed to the second layer, you've tended to following the vanishing point of the previous box, rather than sliding the vanishing point along the horizon line as shown in these notes. That said, these last two exercises are designed as a kind of introduction to the problems you'll face in the 250 box challenge.
Finally, your organic perspective compositions are creating a nice sense of space and scale with the variation in the size of your boxes. Similarly to the rough perspective, your line confidence here has taken a bit of a hit, so just make sure you're taking your time to plan, ghost, and execute confidently. Lastly, the boxes themselves are showing significant amounts of distortion and divergence in places, but again, this is something you will tackle in the box challenge.
Next Steps:
Before you move on, I would like to see:
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One more page of tables of ellipses
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One more page of ellipses in planes
Focus on getting your ellipses smooth and confident. It's okay if they pop out of their bounds a little as long as you're aiming both for confidence and getting your ellipses in roughly the right place.