That creases aren't that bad really. I think it is pronounced by twisting as seen in the forearm too. I would load your pose that the beginning of the animation timeline and then tweak it at the end of the timelines, then slide the slider till it looks better. Or you can redo the pose completely under a new name and blend the to to soften the rough spots. It is a tough area on any figure but blending two poses usually softens the harder areas to tweak. Hope that helps.

-Anton, creator of Apollo Maximus
"Conviction without truth is denial; Denial in the face of truth is concealment."

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