Hi Poly,

Good work on these. They are overall looking quite good.

A few things to consider:

1. Are you siting the placement of your corners from multiple angles as a fail safe to make sure you are perceiving them properly (this can perhaps surprisingly make a lot of difference as the perception of the lines trajectory can vary a lot from different angles of sight), doing this can help you learn how best to look at the page when planning and help to hon your perceptions.

2. It looks like you did some fixes on some of the boxes with notes to figure out how you could fix ones that were mostly good but with one angle pretty far off. This is a great idea. Consider also thinking about the appearance of the shapes of quadralaterals formed for each side of the box and how they relate to each other on opposite sides there is some patterning here that can help with your judgement as well. Sometimes thinking about that can make it obvious that you are about to make a mistake when other stuff fails to check your eye properly.

3. A lot of your larger mistakes seem to be with the placement of your third outer corner. You may want to try placing the center point before your final corner, as that can really help some people to properly align that final outer corner to converge with the other lines properly. If that doesn't help and you are still having issues, try actually ghosting out your hand towards to VP from the various lines to figure out where it is going to be and use that to help you place the corner properly, it should at least avoid very large errors in placement for that third outer corner.

4. You probably got this, but I'm going to mention it in case it helps you to think more explicitly about your converging lines or even if it just reinforces your own observations: The closer that two lines start to each other the shallower the angle they need to be at to converge at the same VP. That is to say when you have a box for instance that is flattened in one direction, the lines that make up the sides that are far from eachother (the narrow sides) are going to have a very shallow angle between the lines that make up a single side (it may even not be easily noticible at all sometimes when looked at in relation to just those two lines) but they will both point more sharply towards a common point mirroring the two lines that make up the opposite side. There is a similar issue you will encounter on more evenly proportioned boxes a lot of the time, where the two parallel lines towards the center are are very close or possibly even in alignment. if they start in a very close position and your VP isn't really close the angle is going to be very subtle, sometimes almost imperceptibly so with a distant vanishing point.

I'm attaching a link some diagrams I put together when reviewing another 250 box challenge submission, where the student was having a lot more trouble understanding some basic principles of how their boxes should look. It doesn't seem like you particularly need this, but it might still help you a little to see these diagrams in thinking about these boxes or for explaining it to others if you review other people.

https://i.imgur.com/az9Zqju.png

https://i.imgur.com/EwDEmOn.png