Hey @PresumptivePanda,
I really thank you for your kind words. Appreciate it!
I already knew from the beginning of this project that reflections will be the key to add realism as showroom is mainly made from glass. So I went to a location and took some photos, panoramas…and simply put them on a cards. Behind the showroom and on the right place for reflections.
Yes I have artstation: ArtStation - Roman Jambor
I have there some archviz projects, also I have one very nice waiting on a client as he should goes online with that first. So stay tuned, I will share it everywhere for sure 
And I am sometimes working for studios on a cinematic projects and for Virtual productions. Check out this list of VP projects I was involved in:
Virtual production - YouTube