I'd love any and all submissions for this, and I'm happy to offer a free physical CD(for US residents) or download product(worldwide) of your choice to the person whose work is used on the site.
By way of legal mumbo jumbo, this would be classified as "work for hire", and all rights to use your submitted art will belong exclusively, without limit or expiration, to Spirit Blade Productions LLC. (If you would like something more official written up I'd be happy to do that for you.)
Sorry I can't offer more at this time, but hopefully a huge public Thank You and a freebie will be of interest! You can send submissions to me at paeter(at)spiritblade(dot)net.