Luke Skywalker stands tall and determined, ready to face down the overwhelming threat of the Imperial Star Destroyer behind him. His right hand is raised, lightsaber held prominently aloft, while his left hand firmly grips the hilt of his sheathed weapon. Snow speckles the ground beneath him, adding a quiet solemnity to the scene. To color this, go with cooler colors to emphasize the stillness of the moment. Blues, purples, and grays to depict the emotions of the scene, suddenly broken by a splash of red from Luke's lightsaber. Then, bring in a menacing feel with deeper colors for the Star Destroyer looming in the background; a contrasting neutral for Luke's clothing that will allow him to stand out against the pale background. This is a powerful image, and the colors you choose should capture that.