Welcome to TPF! You'll find you will get much better results and more constructive feedback by posting 1-4 images in the appropriate gallery section near the bottom of the page as many members are hesitant to follow outside links. To that end, I'll move this to the People Gallery for you.
The little girl is adorable! Is she yours? I'm not going to take the time to retouch her face which Lew noted would help, but here's a fix of her skin color -- overall blue removal. I also dropped in a quick fake sky and tried to do something with the greens which were whacked is all I can say. Your profile says you've got a D40. I'd be interested to see the camera original of that shot as I'm curious about the greens.
Thanks for the thoughts and constructive criticism, everybody. I would post more pics that I think could probably use more help than these four, but the thread is probably nearly finished...regardless, here is the original as requested by Ysarex.