The Create a Painting contest was a competition held by Sony Online Entertainment in 2008. Players could submit their own custom Galactic Civil War-themed artwork to Sony, who would choose three finalists for both the Galactic Empire and the Alliance to Restore the Republic and would then allow the player-base to vote for the winner on their forums. The Rebel winner was The March to Restuss created by the player known as Guillemette of the Bria server, and the Imperial winner was United in Our Cause created by the player known as Zel of the Bloodfin server.
Sources
Calling on All Artists on the official Star Wars Galaxies website (original site is defunct)
Create A Painting Contest on the official Star Wars Galaxies website (original site is defunct)
Five Year Anniversary on the official Star Wars Galaxies website (original site is defunct)
Create a Painting Contest - Imperial Finalists! on the official Star Wars Galaxies forums (original site is defunct)
Create a Painting Contest - Rebel Finalists! on the official Star Wars Galaxies forums (original site is defunct)
In-Game Painting Contest Winners on the official Star Wars Galaxies website (original site is defunct)
Star Wars Galaxies: Game Update 5 on the official Star Wars Galaxies website (original site is defunct)