oh dear, dont want to beat you down...but we cant be perfect all the time, as much as we try!
not really caring for any of them, except 3...i find them too light and slightly blue on their skin...agree about the neck, this has thick neck...(i have one too, i am sooo concious of it, fortunately her's is long!!) anywya, i do think adding a bit of shadow there does the trick.
-#2, i like the background, but find her looking a touch awkward, however, i know not everyone can relax, try as we might to get them too...also, would like to see more headspace, particularly in a full frame shot,
#3 love it!
#4...did you have them running a marathon? ha ha
#5, what puppy dog eyes, but again, a touch more 'clearance' on her, just a touch, framed i think the top of her hair would be nipped and i know that it would bug most clients...either intentionally chop off the head or give it more framing space