The first one is good, but the rest have a totally blended skin.
Try to leave a bit more skin texture

I think that you look great as is. Have you tried just touching up the colours instead? I mean, a bit of brightness and contrast for more beautiful / outstanding colour in the sky and grass and hair and lipstick and such, but leave your skin more or less the way that it is. And I think you'll probably need a better camera too.

I think probably the main reason that I don't like the retouches that much is just my personal preference, see, the model in those photos is gorgeous, and I don't think she should be... touched up. xP

Just like the second post leave the skin texture, it's just washed up

ya, the first is great, don't overdo if not it'll look a bit fake