Corsair Quinn Eyepatch
After looking at her in-game skin and her splash art, I have come to a conclusion. The eye patch in-game is on the right eye. The eye patch in the splash art is on the left eye.
Edit: Actually, everything on lolking.net is a mirror image of her splash art. I don't know whether it looks that way in-game or not, but everything is on the wrong side.
Edit to my edit: I just looked at her other skins. They all have her holding the crossbow in her left hand, so it's just the splash art that is wrong.