I agree with Miasma, that and the front balloon?, seems to take away from the focal. Other then that I like it,.
she looks anorexic well its good youre going away from the c4d bg, but this one the bg just doesnt suit the vector. did you do those yourself? id prefer the bg be 'harder instead of like soft smudeg and blur on top of vectors. a bit over contrasted on the focal and the colors and really dull.