I'm getting ready to send my daughter's pictures to Product and some other places. Since I seem to be getting overly preoccupied with taking the absolute best pictures of her :-) I thought I'd ask if it was possible to submit photos again if your child is rejected once. Thank you!

Absolutely! The usual wait time is 6 months, but if your dd is very young (baby or toddler) maybe 3 months is a better wait time. The very young ones can change dramatically in that short period of time. Good luck!

Just take some really cute pictures of her looking directly at the camera both smiling and not smiling and take a few full body pics as well. Don't take pictures of her "posing" or using props like hats and sunglasses. They want to see a kid looking like a kid. And think POSITIVE! Don't defeat yourself by already assuming she might get rejected. She won't. Positive positive positive!
I like playground shots because you dont have the distraction of all the background stuff in a room cluttering up the picture, playgrounds are colorful and kids are usually having fun at the playground (Plus, the natural lighting is great). Good Luck!