Also, photographer James Beddoes had a chance to see some concept art from the film. Here's what he had to say.
"Can't believe I just got to look at official production still from guardians of the galaxy of Ronan and Nebula. I can't describe how cool they look and how much it made my day! The costumes look so amazing, Lee Pace is going to be amazing as Ronan, he looks even cooler then Thanos did in Avengers! He has a lot of prosthetics on his forehead & chin but you can tell it's his face, his skin is a similar blue color to Mystique in the X-men films!"Thanks to CBM for the info.