So! The classic perspective boxes in a virtual space! Seems easy to the newbie, until the boxes start coming out like jello blobs in an earthquake. 
Seriously, it was a humbling, strengthening, rewarding exercise.
(To be fair to my first attempts, I think I drew my own perspective lines too at the time, from fixed vanishing points. Later, I used computer generated ones 
)
I’m sharing these simply because, when browsing my files to finish my old uploads, I came across and wanted to share the contrast between early and later attempts. First ones were in Jan 2023, then later in Sept 2023, and lastly in July 2024. Despite the obvious difference of the line tool in 2024 (it’s own sign of experience!), I still could tell that my conceptual grasp of 3D in space had strengthened and improved over time with the art practice.
So yeah, nothing to boast to clients about, but just wanted to share the contrast and encouragement with fellow artists that, wherever you’re looking to improve, perseverance and practice will pay off. 