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

The superimposed lines look good. They’re properly lined up at the start, and, for the most part, confident, though there is the occasional wobble. Being a tiny bit less ambitious at the start might’ve helped, but this isn’t necessarily a bad thing. Remember, also, that they should maintain a consistent trajectory. That is to say, if a line runs off course, boldly continue onto that course, rather than course-correct. Moving on, the ghosted lines/planes look quite confident, though I do have 2 recommendations. The first is to maintain a consistent speed throughout, rather than slow down near the end- it’s perfectly fine to miss the end point, stop short of it, or overshoot it. The second is to plot some start/end points for the non-diagonal center lines of the planes. That way, you solve the placement/perspective issue in one step, and can focus all of your efforts in their confidence in the next.

The ellipse section looks good, though, like in the superimposed lines, there’s a bit too much focus on accuracy here, too. The line quality itself looks good, but the ellipses are a little bumpy at times. Remember that it’s more important for our ellipses to be smooth, and rounded, than it is for them to fit in the confines of their frames. Let’s talk specifics! The table of ellipses exercise looks nice. Your ellipses are snug, and of a consistent degree/angle in a frame. I think you could’ve tried a bunch more of those (ellipses of a small degree (less than 30 degrees, for example) are missing), but that’s alright. Be careful, also, to rotate around them a full 2 times, and no more than 3. The ellipses in planes exercise looks good, and I’m noticing only now how big your planes are (this is a good thing!) As mentioned, though, the deformation of the ellipses to fit inside of them is a bit of an issue. Finally, the funnels exercise looks good. These ones are perhaps a little too big, but that’s alright. The minor axis properly cuts each ellipse into two equal, symmetrical halves, and their increase in degree is a nice touch, too.

Moving on to the box section, the rough perspective exercise is a little... well, rough. For starters, recall that each line is drawn once, and only once. If the automatic reinforcing here is meant to be line-weight (I say ‘if’ because it’s adding it is not mentioned in the instructions (but it’s perfectly fine to add some!)), then remember that it should be confident, and subtle. A single superimposed line will do, usually. Speaking of confidence, there’s a bit of a dip in it, here. Remember that, regardless of the magnitude of the task itself, what you’re doing, what you’re really doing, is drawing a line from point A to point B- that’s your unit of work. If it can be confident in the ghosted lines exercise, it can be confident here, too. Finally, let’s talk about your convergences. These start off a little rough- some of the lines that should be parallel/perpendicular to the horizon aren’t, but this improves considerably by page 2. For future reference, however, if you know that one of your points is wrong (which, in this case, you do, because 1 point perspective makes it very clear that 1 set of lines converges, and 2 sets are at infinity), simply ignore it, and try again- that’s the purpose of the points. The rotated boxes exercise looks good! It’s big, the boxes are snug, and, though not as much as we’d like, make a solid attempt to rotate. As mentioned, though, be especially mindful of your line quality in these exercises- try not to get overwhelmed! Finally, the organic perspective exercise looks great! It flows nicely, as a result of your many boxes, and their many overlaps, and the increase in size is subtle, and believable. Their foreshortening is a little too dramatic, all things considered, but that’s alright. You’ll have plenty a chance to practice that in the 250 box challenge, which, by the way, is your next stop! Good luck!