you'll want to increase the brightness on some of them, unless its supposed to look dark. quite a few look like you didn't have enough light in the room.
others are way too small to print. you also want way more keywords. think about everything, what's she's wearing, doing, time of day, time of year, and so on
this one won't print, you have a corner crop issue, you cropped the edge of your name off, and its not in focus - has motion blur, plus its dark. be sure your monitor is calibrated (with a tool), or isn't set to the brightest amount, screens are too bright. what looks bright on your screen will look darker on others. i have mine set to around 25% or so.
just a side note, i think you should be charging a lot more for your originals.
another one that's too small. i didn't check the rest. you want to aim for at least 1000px (without enlarging). that will give you a 10" print.
---Mike Savad
http://www.MikeSavad.com