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I think if you show the eyes it would look much cooler, use the burn tool around the eyes.. yeah..
I also agree with the tree texture, I would make the darks darker and blend the lights in with the skin.
Make the lips blue Like aaron said, and that splatter on the shoulder, distort that so it looks like its actually on her shoulder.
Overall awesome image! I love the colors you used and the icey feel it gives.

Cool! Thank you!