Be confident with your lines, ghost them and then go for it, your lines are looking wobbly

Make sure to draw through your ellipses

With your funnels, make sure to try to align your ellipses minor axis to the lines you lay out

It seems that you had a hard time putting more than one box in your plotted perspective planes, I recommend doing another page of this and putting 3 or 4 boxes in each panel.

In the rough perspective exercise it's important to draw out three panels and set up a horizon line and vanishing point in each one. When you plot the lines for your boxes, keep in mind where the vanishing point is and use ghosting to get the closest trajectory you can. Following the process outlined here will help you get your boxes to feel like they exist in a 3D space.

With your rotated boxes and organic perspective it looks a bit rushed and frustrated, it's fine to step back and finish the exercise later, make sure to keep going slow and steady with nice clean confident lines.