Hey, that's great! Welcome to the Patreon track, I hope we can help!

Lines

This is a strong start here - there's very little evidence of a wobble and your lines show a great deal of confidence and consistency, which we like to see. One thing I do note is that you tend to have a bit of fraying at both ends of your super imposed lines. This usually indicates that you may be going a touch too quickly - you want to be going at a speed at which your marks are still smooth and consistent, but you're also able to line your pen up with the starting line. However, other than that, it's clear you're quickly moving in the right direction! Since you have the flow of your lines nailed down pretty well, I recommend continued use of the the ghosting technique in order to make sure your lines are hitting the end points without over- or under shooting. That will be important later for maintaining the illusion of 3D form.

Ellipses

Really great start here. Your ellipses are have a confident, even shape and they sit snugly in their planes, tables, and funnels, indicating to me that you have good control. I do see a few instances where you're not drawing through them enough, but these look like minor flukes rather than a consistent trend. Just remember to go through them at least 2-3 times in order to tighten them up and build muscle memory.

As for your funnels, keep a close eye on that minor axis. You want your ellipses to be aligned with and bisected by this initial mark and although

Rough Perspective

With this particular exercise, the community did have it right that using a brighter color would help you see your mistakes a little easier, but the bigger thing is keeping your boxes aligned with the horizon. In one point perspective, your verticals will be perpendicular and your horizontals will be parallel with the initial horizon line - it's a concrete rule of one point perspective, so keep that in mind, as it eliminates unnecessary guesswork. At the moment, your boxes do tend to tilt away from the horizon, which could lend to making your depth lines a little more complicated to work out.

When it comes to your mark-making, fight the instinct to go back over mistakes with an additional mark. Doing this actually draws the eye rather than covers up the mark, so as long as a line isn't wildly off the mark, you can usually leave it be and it'll go unnoticed.

Rotated Boxes

This is a very strong go at this challenge! You keep your gaps narrow and consistent, you've drawn through your boxes neatly, and you get pretty close to that full 180 degree rotation. Overall, very strong work. It demonstrates that your sense of 3D is coming along very quickly. Should you attempt this again and would like to achieve a fuller rotation, keep an eye on each boxes VP. Making sure that it's moving along the axis far enough past the VP of the previous box will allow you to make the box rotate rather than simply move back in space.

Organic Perspective

Like your rotated boxes, I believe this is also a very strong go at the challenge. While there is room for improvement when it comes to getting each set of parallel lines in each box to converge consistently, that's nothing the 250 box challenge can't help with!