I am going to have to go against the grain on shot 2, I am sorry. I will be a bit honest here. Because of the wide angle its shot at, her hands look huge compared to the rest of her body. Also dont like that one elbow is bent while the other is locked. The surrounding dont match the outfit either. It kinda says to me, hey I didnt have a studio to shoot this so we just wandered into a construction site. The weird gaussian blur around the edges screams amateur as well.
First shot is cropped off at the ankles which is a big no no, you also left unneeded space above her head. Why not bring the camera down and compose it so we see her feet instead of dead space above her head? Third pic just doesnt work on any level. Model is attractive though 