Art in Nature? Please help for 10 points?

I have a project, well, a paper really, on Art in Nature. Like how fashion designers use natural things (like animal hide patterns[cheetah,zebra etc], flowers) to inspire their clothing, how artists paint these things and why. I can only think of a few things, but I need a lot more. Please help and be as detailed as possible. 10 points to the best answer!