It is important to be cautious when sharing children's photos online and in a contest setting. It's essential to research the contest or website thoroughly before submitting any photos. Look for information about their safety policies and how they plan to protect children from potential predators. It's also important to be aware of the potential risks of sharing children's photos online and be aware of the possibility of the photos being shared or used in inappropriate ways.
It's always a good idea to be vigilant when it comes to children's safety, whether it's online or offline. It's important to talk to children and teenagers about how to stay safe online and be aware of what kind of personal information they are sharing.
I would advise you to be extra careful and not to share any pictures of your kids, or anyone's kids on any website, or platforms that you are not fully sure about their terms, policies, and safety measures.