In the early stages of pre-production, filmmakers turn to artists to help shape and evolve what will become their final vision for their movie... Here's a sample of some of the fine art from the likes of Iain McCaig, Doug Chan, Warren Fu, Ryan Church, and much more, as they helped shaped the previsualization for George Lucas' Star Wars Prequel Trilogy...
The Original Design for Darth Maul
The Original Design for Mace Windu
Episode II Concept for the Sith Witch
Concept for Padme Amidala by Warren Fu
Eventually used for Sheltay Retrac - aide to Bail Organa
Padme Amidala Skywalker - Episode III Costume Concept
Doug Chaing's Podracing Concept
Design for Cato Neimodia
Early Episode I design for Coruscant landing platform
Episode III Visualization of Alderaan
Final Concept Design of Darth Maul by Iain McCaig
Early Kenobi Design with Raph Fiennes in mind for casting
Battle of the Heroes: Mustafar Concept Art
Crevasse City Concept - eventually used for Utapau in Episode III
Ryan Church designs for Revenge of the Sith
The Clone Wars begin
Republic Skytrooper with jet pack
Early design for Shaak Ti
Concept Sketch of Padme
The Gungans
Doug Chiang's design for the Naboo Starfighter
Jedi vs Sith on Tatooine - Episode I
Walker concept for Revenge of the Sith
Holonet Grievous - based on Concept Artwork
ARC-170 - final design for Star Wars Episode III
V-wing design for Episode III: Revenge of the Sith
Expanding designs for Kashyyyk as seen in Star Wars: Revenge of the Sith
AT-TE Walker Concept Art for the Star Wars prequels