Homemade chicken broth

We finished processing our chickens today.  Six of the twelve birds were cut up into pieces which gave me backs to use for broth.  I placed the backs into the crock pot along with carrots, onion, and celery. I added rosemary, thyme , parsley and Sage from my garden. Hopefully this will turn into a great tasting broth. This is my first time making my own. Crossing my fingers here.