Naruto VS Sasuke: Final Battle (Update 1)

So I decided to do another Naruto fan art and I got to thinking about Naruto and Sasuke's final fight. Since its going to be just as historic as Hashirama Senju VS Madara Uchiha (at least I hope it will be), I thought to change both characters entire to historic shinobi armor (like HS and MU). Sasuke is wearing armor similar to Madara (though I made the color purple, in reference to Sasuke's Susanoo color). With Naruto, I had 2 armor options to choose from (Senju or Uzumaki clan armor). I decide to go with Uzumaki clan armor and color it orange (because many think the Uzumaki c lan's armor is always navy blue, but in the anime, The armor is different colors amongst the Uzumaki c lan).

As you can see it is not finished (because I am having trouble coming up with an epic background, and I want to be original, instead of just drawing "The Valley of the End" as the background). if you have any ideas I would be honored to read your comments and see what I can gather for a background idea (unless I come up with something last minute). As always Enjoy!

PS: I drew out Hashirama and Madara out as a connection to the background elements. Since the "snake" hand seal has been associated with Doton Jutsus and the "tiger" Hand seal with Katon Jutsus, I want the background theme to be "Earth vs Fire". Again if you have any ideas please don't hesitate to share your opinion.

Update #1: Well I started to come up with a background (at least for Naruto's side of the page), more will be added by the next updated page, or finished page (God willing to give me an idea!). If you like the "preview" version more than this one, I posted that version in my Naruto Art Folder as well.