I love everything about the third one. Nice ambient light, nice placement, great expression....it's all good. I'd be all over the first one if you had A)cropped way in, or B) included her fingers.
I like the playfulness of the 4th and the last one. Nice expressions.
Don't think for a moment that a few minutes in post production takes away from the art. The first photo reminds me a lot of Yervants famous photo of the bride beneath the parking garage light. Yervant took a nice photo out of camera and made it great with post (although my guess is that I would have peed myself if I came out with something as good as he does straight out of camera. Hehe) . He didn't lose the ambient light, nor the art.
Embrace some post processing, and these could be standout. Just my two pennies.