I like number 1. Very sharp. Number 2 I'm not sure I totally like the crop. 3 I really don't have an opinion, but it doesn't stand out to me. 4 I like a lot, but not sure on the color of skin. I'm sure that was the intent, but it all goes to preference.
Overall the shots are pretty perfect! I think any nags would be personal preference. Was this all with ambient light or were any strobes used?
Personally I think they're all pretty awesome well done! and the model is hot hot hot. If I were to give any criticism it would be like the above about the crop on No.2, getting her whole head would be a bit better, but aside from that awesome!
1 is my favorite. I like them all, but especially 1. I tried a quick edit. The background had a tremendous amount of noise in it, to I tried to take that out. I also burned the eyes just a tad. I dont know how much it worked, but I like it.
#1 so beautiful - my fav
#2 is great too!!
#3 not bad.. but maybe background not so interesting?
#4 very good, but yea, maybe you could work on the exposure a little. but overall, very dreamy which I like