Yoooo Snakker, very nice technical perspective work! Looking great!
My only suggestion would be to make a lineweight pass over this excellent construction to help separate the shapes. You've already done all of the hard work by sorting out the shapes and drawing them correctly in perspective, and I always find that a lineweight pass helps boost my confidence. They are quick and follow simple rules and yield awesome results.
I'm certain this is covered somewhere in Art School, but as a reminder, heavier lineweight can be used to imply that:
a. something overlaps something else
b. something is closer to the viewer
c. something is in shadow compared to something else
d. something is heavy (like darkening the bottom of the box in the image implies weight)
I did a quick pass to show you what I mean. Hopefully it helps!
Keep up the amazing work, you're doing great!