There are so many things to learn in rending but it makes a fun journey developing your skill sets. Thank you for video, I think I have a better grasp and framing and perspective.
11:08 For the missing wall, you may be able to make an instance of another wall if the walls are separate. You might need to add some furniture to break up the uniformity a bit. For the first image it looks good and I would probably play with saturation render settings for the muted feel.
