Aileen, a challenge for you. If you have a good camera or even a disposable one...
Go out into the woods, parks, rivers, streams, ocean, beach, anywhere actually and take pictures of nature displaying the elements, principles, and techniques of design. You'd be amazed at what Nature has to offer.
BTW, one of the hardest technique to find??? Braiding....
Set yourself with a list of what you're looking for...
Texture is a great one too... with the right lighting...lots can be found.
Color, I love in the fall. Mother Nature provides perfect color harmonies.
Make a notebook with each picture labeled as to the Principle, Element, or Technique of Design...