#1 I like.
The rest, look like simple point and shoot camera set on auto exposure.
Don't take this as a cut down or a personal attack, but, set your camera to the "M" setting and start getting creative with the light.
Lights, flashes, reflectors, stuff to block out light, angles, etc etc etc...
Use it all and make your photos pop.
The reason I like the very first one is, it looks like the lighting is actually not directly in front of her. It gives a nicer feel to it. It doesn't have the point n shoot look to it. To me it's more creative.
But that's my opinion, so, take it for what it's worth to you