Hi! Thank you first of all. The modelling process was about 5-6 hours I would estimate. Textures 2-3 hours.
The ‘product scenes’ took more time than I expected since a white background on a low roughness floor is a bit tricky when it comes to lightning. It’s actually a big emission plane in the background on a strength of 5 and a plain white floor with a low roughness.
Interior scenes I’m more used to especially when it comes to lightning so that scene was actually faster to setup than the other ones.
The best tips I can give are references and lightning. Search for as many references you can and try to replicate the lightning setup the best you can. There are quite a few tutorials on YouTube how to setup lightning in different scenarios. Combine HDRis with sky textures as well as rim lights, edge lights and foreground/background lights. As long as your modelling and textures are decent it all comes down to lightning.
Thanks for your kind words and keep up Blendering!