I finished your class and here are my results. I have to say I'm absolut new in blender, it's my 2nd month. So I tried my best and your course teaches me good tipps and tricks.
I try to fix some details and lighting, but I just wanted to show you my results so far. I run only 512 samples, the last picture in this series is with 2000 samples. There was no great difference for me, the rest is Photoshop ;-)
Looking forward to you other classes and hopefully you create some new classes in the future for archviz.
Very interesting project and of course great teacher.