I suck at building myself. So I go for functionality. There are vids on YouTube that show simple buildings and how to make them. I use those to start and tweak them as I get more material and want a break from exploring.

Below is what I built combining two examples I found on YouTube. It started out 24 meters long, 6 meters wide. I actually amazed myself. Maybe someday I'll do more to it but I doubt it.

https://steamcommunity.com/sharedfiles/filedetails/?id=2717946378