tarotbear
How on earth do you know that your spread is absolutely yours and that you created it and it was never thought of or created by anybody else anywhere else prior to you doing it?How do you know you are the creator? You may have created something, but how do you know that you are the original creator?
Copyright doesn't protect an idea, only the material expression of it. So, it may not matter if anyone else thought about the spread. If Metafizzypop was the first to write it down and publish it, she could have a claim to it.
It's kind of like this: One dark and stormy night you are sitting around with a friend, tossing back a few Absinthes. Three or four Green Fairies later you come up with the wonderful idea that if you could breed gigantic fireflies you could use them to light places that have no electricity. That is an idea. However, your friend/drinking buddy is Jules Verne and in the next book he writes a group of cavern-dwellers on Mars are using gigantic mutant fireflies to light their world. Verne has the idea in print; it is a material expression of your idea - but he gets to copyright his book and the credit for the outlandish idea goes to him - not you. 150 years later when someone produces light from genetically-altered fireflies they will call it 'Verne-light', not 'someone who got drunk on Absinthe light.'
The world is full of sob-stories of someone who had a great idea and got to the copyright office 30 minutes after someone who stole their idea had already beat them to the office.