Well ... I really don't see the point of this video.
Always thought that making-of should go in detail about the acctual making of the final image you present.
This video on the other hand shows us that you can navigate the max interface, as well as changing the materials to Corona ones and set up the render (roughly).
Dude i really wish you well, but right now it seems that you put too much emphasis on getting attention for yourslef, rather than the acctual technical and architectural aspects of creating a pleasing image.
So:
TEXTURE TILING - awfull! always try to look @ reall world reference when working. Have you ever seen an entire bathroom made of one block of marble ? perfectly homogenous marble ? No ? Then you are correct. Now look @ your picture again.
BACKPLATE - totaly pixelated, contrast doesnt match the one of the acctual rendering, same as the mood.
MATERIALS - 90% of them look plastic, the other part look hilarious - curtains seem to be carved out of ice, same as the taps near the tub etc.
IES profiles do not match the light sources you used - they light the ceiling, moreover they reflect in the mirror.
Well i tried my best, maybe others will add something. I have enough lol