This is a pretty good submission overall, just a few things to note

In your rough perspective, keep in mind you need to have your horizontals parallel to your horizon, and you need to keep your vertical lines perfectly vertical, so on a 90deg angle to the horizontals for this exercise.

Rotated boxes - remember we want our gaps to be consistent and narrow between each box, and keep in mind with each row we move along we need to rotate them just a little more on our major axes, i can see some rows where you have them rotated just the same, with the box further out just being smaller than the last

This is a great start, however theres room for improvement with rotating your boxes in organic perspective, where most of your boxes have about the exact same amount of rotation applied - check the rotated box examples, and see how on the outermost rows we have one plane where the outermost are just barely showing to us, and in your box challenge try to work on showing similar boxes to that