Congrats on finishing part 1!

I'd recommend using pen as you proceed. It's less likely to smudge and it shows up better on camera.

I'll good in the order you uploaded your work in.

Looking at rough perspective 1, it seems like you used scratchy lines for some of your boxes. That's probably tempting considering you're using a pencil and can erase whatever mistakes you make, but I think you'll benefit most from sticking with one well planned line and moving on. Your lines are also wobbly. Try focusing on the start and end points, and connecting them in one smoove motion. You may be focusing to much on trying to get a perfectly aligned line which is causing you to correct yourself midline, which is no good.

As you went on you improved on all of those fronts, so good job!

I think you did a great job of conveying a sense of rotation in the rotated box exercise. Try sticking with one line and making planning it out using the ghosted line method. Using a pen may make that easier.

Organic perspective looks good. I like that you used single lines here, for the most part. I think you'd benefit from using the ghosting method on some of your lines here. Varying the size of your boxes some more may also encourage you to think more about the individual lines, especially during your "y".

Funnels look good. Your eclipses do a good job of touching each other and the funnel. A bit hard to see, which I think is a result of using a pencil. You probably could also fit one or two more example on your page.

Superimposed lines have fraying at the beginning and ends. Focusing on placing your pen(cil) and where you want it to go.

Ghosted lines show signs of erasure. The point of the exercise is not to get perfect lines, but to develop confidence in your line making. Try not to wory about hitting the mark if you've already taken all the steps to get a close as possible. Try moving your arm faster so that your lines do not wobble as much.

It's hard to see what you've done for the ghosted planes/eclipses exercise because of the pencil and the poor picture. Try to flatten your sketchbook/packet as much as possible and move anything causing a shadow from your surroundings. I Iike how dark you made the corners. There's some wobble in these lines, remember the ghosting the method. You maybe slowing down as you approach the corners, considering that you hit most of them head on while making your planes. Ghosted eclipse should be ghosted around twice. It looks like you did a couple more laps on some examples.

Again, congrats on finishing part 1!