Your work here is looking good. Your linework is confident and smooth, and your use of the ghosting method is consistent through the whole lesson. There's some overshooting now and again, but that's something you can improve on as you continue moving forward. I can see these things throughout your ellipses too, where they're looking really evenly shaped.

Through into your boxes, there's some overshooting again but your horizontals/verticals are properly parallel/perpendicular to the horizon line. The convergences towards the VP are obviously not perfect but that's pretty normal.

Your rotated boxes are mostly looking good, but I think the boxes furthest out to the sides on your horizontal and vertical axes aren't converging enough as the vanishing point slides closer to the center. That VP should be pretty close to the box at this point.