PLEASE fellow Star Wars headcannons enjoyers - I encourage more of us to create entire cultures and build worlds when creating fan fiction or fan arts. But how can we do that? I have a few ideas :
- seemingly nonsense traditions
Did you know that inhabitants of Naboo jump every time they hear a frog? Nonsense, right? Well, it is a very old and out-dated way to greet somebody amongst the Gungans. Back in the day some people struggled distinguishing between the sounds of their neighbours and some of the planet's animals...
- traditions that do not align with the wide-spread moral code
Perhaps on some planet similar to Tatooine we had space-Hitler that is now celebrated as a national hero? We don't agree with those views but let's be realistic - if there are so many different cultures, systems and species then some of them are probably hateful too.
- create stereotypes/misconceptions that are widely spread.
Maybe some people on Tatooine believe all Toydarians to be cheap assholes. Perhaps some Rebellion members who weren't there on Endor are convinced Ewoks are miniscule, like, we are talking 10 cm tall.
- write metaphors which refer to characters' cultures.
Act like half of the Galaxy is attempting to translate their whole cultures into language.
Make characters from Tatooine use phrases such as something being "cheap as a legless slave" or something unbelievable happening "when the Hutts fly".
If your world is complex enough (and if you're freaky like that) you can even show character development (values shift, adaptation of different culture's language) through changes in that specialazed language.
Make your worlds alive. Make sure they not only suck the audience in - they will devour us.