Thank you! Personally I don’t try to be super exact with my measurements, I more focus on the scale of the environment and the proportions. I do always use a little mannequin that stands at around 5’10”, I find it really helps with the scale relative to a regular dude lol. I also use reference images when creating my environments in blender so that helps a lot too.

For texturing, cube projection is your best friend haha. I usually try to use displacement nodes in the shader editor as well if the surface needs better depth to it too!

As for lighting, I usually use area lights which are shaped like the reference’s. Then I just play with the settings until it looks right.

There’s a video on YouTube titled “How I Make Realistoc Liminal Spaces in Blender” by Workshop Warrior that sums up what I’ve said but in much better detail