Exposure Lock (AE-L Button) is the abbreviation stands for Automatic Exposure Lock. It is useful using automatic and semi-automatic shooting modes. Where has this information been all my photographing life? So freaking helpful it's not even funny.
I've tried this: This is a GREAT origami tutorial for a fox. It gets a little bit confusing, so I don't recommend it to total beginners, but ultimately it makes a cute origami fox that can stand up on its own.