wow, really nice. #1 and #3 work for me.. #1 as it's timleless and #3 as it shows perfectly the 'mind' and interest of the kid and how small/young she is in relation.
I just open a texture image, drag drop it onto the image and then adjust opacity and most often change the layer mode and do some selective erasing.
#2 doesn't have a texture added I ran a softy bleach action by Phaunt and then played with it till I got the desired results. The action add's a gaussian blur giving it the extra softness.