Hi! Let’s take this one exercise at a time~

Your superimposed lines look great- they’re smooth, properly lined up at the start, and of a consistent trajectory. Your ghosted lines look quite good, too, though I notice the occasional arc near the end. Try to be a little less conscious of their end points, if you can. It’s far more important for them to be straight, than it is for them to stop at the correct point. Also, be sure to actually plot some for the non-diagonal center lines of the planes.

The table of ellipses exercise looks great. The one thing I’ll mention, and it’s more of a recommendation than a critique, is that they have a bit of a tail to them, so see if you can lift your pen off the page at the end of them, rather than flicking it off. The ellipses in planes look quite good, though a little less accurate than their counterparts in the previous exercise. Though this is not unexpected, there being more things to do in this one, I’ll still recommend you spend a little longer ghosting these if you can. If that fixed the problem, good. If not, no worries, mileage will. The funnels look good. The ellipses maintain their smoothness/roundness, and are properly cut in half by the minor axis. Just, if there’s no more axis, or no more frame, don’t add another ellipse, please. It’ll have no goal, and as such be useless to us.

The plotted perspective exercise looks clean- well done. The rough perspective exercise is nicely done, too. You’ve got 2 sets of lines that are parallel/perpendicular to the horizon, and another set that converges to a VP. To push that convergence even further, see if you can spend a little longer considering your points. There’s no obligation to go with your initial guesses, really. If you find one to be a little off (and you do so by ghosting it to the horizon once you’ve got it on the page) absolutely ignore it, in favor of a better one. Solid attempt at the rotated boxes exercise. It’s a little small, but you’ve kept the boxes snug, and made use of their neighboring edges (in all instances but one! (the left-most box on the horizontal axis)), and they rotate quite nicely as a result. Nice job on the hatching, too. Finally, the organic perspective exercise looks great. The foreshortening is at times a little dramatic, which is not ideal, but the boxes have a consistent increase in size, which really pushes the illusion. Their construction itself is quite good, too, though it’ll be even better as you get a chance to look at them in more detail in the box challenge. Speaking of, feel free to head on over to it!