I like the pop of red against the line art; her face is drawn beautifully. The only thing I have to nitpick at is that her hands seem a little small in proportion to the rest of her, but they're amazingly drawn too, so who cares.
I love how the tattoos and her expression enhance each other to add depth the character. But the tattoos, while beautifully drawn, feel flat to me. I'm hardly an expert on drawing technique, or art really, but I feel the tattoos clash with the figures' contours. That's just my two cents.