the differences between The Golden Section, The Golden String, and Fibonacci Numbers. These all essentially come together to form the same Golden Ratio but helps understand the breakdown of it all and why its so important.
How to Create Clothless Effect / Invisible Jacket in Photoshop - Photoshop Tutorials - YouTube
I really like this photo as it is not just disguising the person themselve but it is also disguising emotion that the girl is feeling. It almost gives the impression of an explosion of feeling and emotion. It can also present the feeling of insanity.