6:12 AM, Monday June 7th 2021
Congratulations on making it through!
You would greatly benefit from drawing bigger boxes and from doing it slowly. BIgger because it allows to check easier for the correct perspective and also, any error in the direction of a line gets magnified the smaller the box is. Is harder to make long straight lines, true. But it is a good skill to develop.
And the slowly part , I am saying it because it feels like you are rushing it. All your lines overshoot their ends by a mile, and the shadowed side of the box has the lines also overshoot its side!
BTW, your papers seem destroyed. You seem to be using way to much strength/preassure into your lines. But maybe is only when you are checking with the ruler after drawing the box.
Newby here. So take my advice with a grain of salt.