I am Kyuubi16. I have to say I'm amazed at this pic. I've been requesting quite a bit of art for permission use as cover images.
While a few have said no, quite a few have said yes and I'm hoping you would be one of those ones. You see, I base stories off the images or use the images to enhance stories. Then I credit the source authors in summaries, often placing a link to their gallery when I load the stuff on Your Fanfiction.
Your Fanfiction is a new fanfiction site for the fans that allows MA fics and a deeper search engine. I'm hoping to encourage a new breed of good fanfiction and good/rare crossover couples in the future and gain more popularity for it.
Mainly because I'm trying to try new styles and stuff. Art like this helps inspire, enrich how the story is viewed and well, it inspires me to write. All and all I hope you do allow me to use this piece.
Also if you have to know anyone who wouldn't mind doing free requests I would like to know. I would to find someone who has a fondness for Naruto crossovers and wouldn't mind doing images based off scenes from my stories. Or if not Crossovers, just images for any series or characters because there is such few art for a lot of great characters.