cinematic portrait of valhalla wiking hulk, green skinned, symmetrical face, viking helmet, only head and chest, intricate, desaturated, tim hildebrandt, wayne barlowe, bruce pennington, donato giancola, larry elmore, maxfield parrish, moebius, thomas ehretsmann, masterpiece, trending on artstation, cinematic composition, dramatic pose, volumetric lighting, sharp, details, hyper - detailed, hd, 4 k, 8 k