Hi! (and welcome!) Let's get to the critique~

The superimposed lines look quite confident, so nice job there. The same can be said of your ghosted lines, though I'd have liked to see some more of those... This extends to the ghosted planes, too, but there, you forgot to plot start/end points for their center lines (the non-diagonal ones!) Also, be careful that you don't repeat lines. If a line comes out wrong, it's wrong. Instead of correcting it, leave it, and spend some more time ghosting the next one. In general, your ellipses look really smooth, though you'll go around them too much. 2-3 times is the recommendation, ideally 2. Also, in the funnels exercise, be careful that the minor axis cuts your ellipses into 2 equal, symmetrical halves (meaning: they can't be titled!) The plotted perspective exercise looks good, if a little bare... The requirement is 1 page, by the way. Conversely, though it meets the page requirements, the rough perspective exercise is all one composition. The page should've been split into different compositions, that you'd then frame. The exercise itself looks correct, though. (But, again, don't correct incorrect lines!) Nice job on the rotated boxes / organic perspective boxes combo. Though, like in the rotated boxes exercise, you should've included the 'invisible' lines of your organic perspective boxes, too. (That is to say, if a box is overlapping another, don't hide the lines that are being overlapped!) It's important to do this, because it's, in the end, what improves our understanding of 3D space.

Despite some minor hiccups, and the occasionally bare page, this is a solid submission. GL on the box challenge!