Poser's pretty complex, it's hard to get poses *just right*. For example, if you want to move the arm to be held over the head, it's really easy to overshoot and next thing you know, it's twisted behing her back the wrong way. Another problem with poser is that, as someone pointed out, "fudge look" to the hair. To me it looks like plastic, but you can d/l realistic hair textures. You can also do a few tricks in photoshop to make the hair look more realistic.
As for the pic itself: looks good