If you are uploading another artist's work, you need to be giving credit to that artist. This piece was uploaded originally in 2011 by Tretman on DeviantArt. Posting art by another person without making it known that it is not yours is not ok. I have included the link to the original post, and it should be posted on your upload. Also, it has zero things to do with Minecraft.

www.deviantart.com/tretman/art/Dragon-Wallpaper-267576813