The Liquify tool is something not used very often to obvious effects but can be used to subtley enhance images. To use it, select the image, then go to Image in the drop-down menu, then Liquify(or shift-control-x). You can use the options provided to warp the image, and by pressing revert you return to the original image and delete any changes you made.
Original image	Subtle changes to horns, mouth, teeth, hair, ect.

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