For the first time i would say those look great tho
Once you do those enough times and start of being more aware of vanishing lines and all of that perspective shenanigans, things start to click.
One thing i will say is to watch out for the line quality, the sooner you create a habit of make them "clean" the easier will be for you on the future. The basic gist of it is to use the entire arm, big/long strokes and a bunch of Ctrl + Z when you mess them up, Marc's has some tips on his youtube channel for this.
But hey, you're on the right track, great work overall!