Your rotated boxes and organic perspective looks pretty good man. You understood the concept for sure and that's the main focus. Those boxes look like theyre roating in space to me. For the rough perspective exercise, the boxes that are far away from the vanishing point were way off the mark. Try to think of it like a straight line back to the vanishing point, and then put a dot where it needs to go. I would go back and read the steps for that lesson and just incorporate the exercise in your warmups. Only spending about 10 min on it even if you dont finish.