@arev Your bathroom arch viz made it into my faves, as you probably know already, so good job! I would recommend adjusting the brightness of the exterior texture, blowing it out to make it feel significantly brighter than the interior. Also blurring it would help A) the noticeable pixelation and B) the depth of field effect. Still it’s an A from me.
I see what you mean about the car paint shader. It looks like metallic reflection is enabled perhaps? All the reflections being red is a big difference from the source and from realistic car paint in general. But I commend the effort to get something together. C+ from me.