i'm torn...
#1: like the composition, but to me the vignette doesnt work where its at on here... too much sun on their hair and the vignette is countering it.. to me a bit distracting
#2 i do not like this perspective and the overall pic... the black and whites dont work on this and appears, almost scary
#3 is good, but seems soft to me, and usually i like full frame shots like that, but.. even though an infant wouldve been much better if was looking directly at the camera
keep shooting and all..
i would try to focus on compositions mostly.