Amanda
Definitely you can use any images you like for your own use. Technically there could be a problem in showing them here - athough some allowances are made in copyright law for collages - not enough to publish them, though. It's best to keep track of your sources or only get images from public domain sites.
Thanks for that information!
I will just post the Tree. It's my favorite anyway and that is the only one that clearly says freefoto.com on it, which is what I think you are talking about with a public domain site? (Maybe I should have just went there so I would actually feel okay showing everything I pulled together... )