Charlie, All the tools are right here in the Village to start making your own patterns. Travis has taken the time to make some really good tutorials on Inkscape and Gimp.
Julie (my wife) and I love hummingbirds.
Laura Soffer is a friend of mine on FB who I follow. She has a page https://www.facebook.com/MyHummingbirdHeaven/ where she posts her fantastic photos. I was honored when she asked me to scroll a couple of her pictures.