Wow just look at how much you have progressed!
I really enjoy those perspective exercise sketches. I was trained in similar ways and I still take time to set up my perspective frames for any sketch that isn’t just for my to look at. The result is effective and efficient concept communication, and people tend to feel safer agreeing to your concept because it’s much clearer. Congratulations and you should be excited about what’s coming up next for you. Just a reminder, getting one sketch right is ok, but the key is getting every sketch right. Only constant practice and persistence will get you there.