I still have that original 'The StarWars Portfolio' collection of artwork that McQuarrie created, that literally got Star Wars off the ground back in 1976. I've always admired people like McQuarrie, Ron Cobb, Sam Didier, Syd Mead, H.R. Giger, and others, who could literally create magic from a blank canvas, and made our world a little better for showing us worlds that didn't exist until they opened the box just a bit to let us peek inside.
One of my favorite images from 'The Empire Strikes back' era:
I limited myself to just one. RIP, Ralph McQuarrie.