Yea, in my opinion #1 she is neither sillouhetted or exposed enough, she is sort of in between.
Also, not sure if i would have had the sun on the other side of the pic or not..
#2, lovely shot, i would maybe have set horizon a tad lower to cut out a bit of the black beach, not all of it, as its a nice effect.
#3 is beautifal, shame about the lens flare.