Concept Art
Concept Art is a vital part of creating the look and feel for Star Wars. As the designers are dealing with a fantasy world, they have to really push their relativity, and create the illusion that the characters are in another world.
After looking at the concept art for each film, it is clear how each film has it’s own art style, despite hiring many different artists.
Original trilogy: Ralph McQuarrie
Prequals: Ryan Church, Warren Fu, Doug Chiang, Iain McCaig
Newer films:
EP4: A New Hope (1977)
https://www.cbr.com/star-wars-new-hope-concept-art-pieces/
EP5: The Empire strikes back (1980)
https://www.starwars.com/the-empire-strikes-back-concept-art-gallery#
EP6: Return of the Jedi (1983)
https://www.cbr.com/star-wars-return-of-the-jedi-concept-art-you-need-to-see/
EP1: The Phantom Menace (1999)
https://screenrant.com/star-wars-character-concept-art-pieces-prequel-trilogy/
https://io9.gizmodo.com/prequel-trilogy-concept-art-5566660
EP2: Attack of the Clones (2002)
https://io9.gizmodo.com/prequel-trilogy-concept-art-5566660
EP3: Revenge of the Sith (2005)
https://twitter.com/SWTweets/status/1348711275694415872/photo/1
http://ryanchurch.com/star-wars-iii
EP7: The Force Awakens (2015)
EP8: The Last Jedi (2017)
EP9: The Rise of Skywalker (2019)