Flaming sword

So I just found this while browsing, and I must say that it is, indeed, extremely well done! I mean, heck! It takes me over two hours to complete a simple cartoon drawing, so I don't think I'll be posting anything like that any time soon. But 30 minutes to speedpaint this? Well done!

The reason I was browsing around was to try and find a better image for my avatar. Hey, the blue glowing sword's okay, but it's truthfully only a placeholder until I can find something more epic. Now to the point: Would you mind letting me use this image as my avatar? I promise I will give credit to you if you let me, in any way I can. And if you want something in return, I could write a short story telling about this very knight who uses the magical Phoenix's Tongue to battle an ancient black knight who rides an acid-spitting dragon. (Read my stories before you answer that part of the question; you'll need to know how good I am at this.) I can't give you points, though, since I don't have any at the moment, so if that's what you want, either I'll have to find a way to make points or just not use this art.