The Lone Centurion WIP

Detail of a WIP I'm working on, detailing my steps of painting the Pandorica. (I may never have the patience for that amount of detail work again!) You can see I started over three steps in because the colors were too vivid. Something about the final render still feels off to me lighting wise though, but I can't quite pinpoint it. Any thoughts and suggestions from you guys out there would be really appreciated!