Welcome! Let’s take this one exercise at a time, shall we?

Starting from your superimposed lines, these are looking great; smooth, properly lined up at the start, and of a consistent trajectory. The ghosted lines/planes look quite confident, also, if a little hesitant near their ends. Likely, you’re slowing down as you approach them, in an effort to not stop short of them, or overshoot, but this is causing your lines to become wobbly. Instead, see if you can maintain a consistent speed throughout – more so than accuracy, it’s confidence that’s important.

The table of ellipses exercise looks great; I’m pleased to see so many ellipses. Not only that, but they’re all smooth, rounded, and properly drawn through. The ellipses in planes look similarly good. Despite their more complicated frames, they do a solid job of maintaining their prior smoothness/roundness. In fact, for someone of your level of skill, I’ll recommend sticking to 2 rotations, only. It’s a little more challenging, as it less effective at hiding your mistakes, but that’s exactly why I recommend it – the more obvious they are, the more obvious your next steps will be. Finally, the funnels look solid – your ellipses here are snug, and properly cut in half. Small bit of advice: see if you can lift your pen off the page at the end of them. Right now, it seems like you may be flicking it off, giving your ellipses a bit of a tail at the end.

The plotted perspective exercise looks clean.

The rough perspective exercise is a little hard to judge, as you’ve extended your lines past the horizon, rather than stopping at it, but they seem to be mostly correct, anyway. The linework is strong, too, so nice work, all around.

The rotated boxes exercise looks great. It’s big, its boxes are snug, and properly rotating. They do run into some issues near the back, but this is entirely expected, and something that we’ll address in just a second, in the box challenge.

Speaking of boxes, the organic perspective exercise looks quite good. The increase in size of your boxes is a little subtle, but the shallow foreshortening by itself, coupled with the interesting compositions, do a lot to convey the illusion we’re after, regardless of that. By the way, and we’ll address this in the challenge, also, but if you’re wondering why some of your boxes look a little strange, it’s because one of the inner angles of the initial Y-shape are less than 90 degrees – that’s something we try to avoid, if we can help it.