Would This Be Considered a Fan Fiction or an Original?

So I'm planning on posting my first story here, and I'm a bit confused as to what my story would be considered.

My story is pretty much based around Fairy Lore, however; it's also a like a different a version of Alice in Wonderland and Through the Looking Glass Mixed with some elements from The Wizard of Oz.

I will actually be using characters and from these stories like the Queen of Hearts, The White Rabbit, the Wicked Witch of the West, the Ruby Slippers ect.

However; I'm not sure if it's considered a Fan-Fiction because there have been different versions of these stories before.

So what would my story be considered?