Uaaah! That's so freakin' cute XD I love the concept of this, and how you manifested it. The swirlies in her hair are really awesome looking. And I love Carmen's slightly perturbed expression. She's just ever so bemused and helpless.
I also really love the shading in this. I notice some awesome rim lighting going on, and how you have these dark bits tracing her shadows. It really brings out the volume in her body, especially around her arms and abs. It's just so cool seeing how you articulate the anatomy!!
I love Carmen's body type. It's so nice and lean and muscular at the same time. I love the concept of this and her hair. I kind of imagined her as a shape shifting monster! It's in her body language, you know? I love your shading style!! And your crisp lines.