I didn't think that this render was allowed to be used because it's from deviantart? Otherwise, I like the fx. The color is awesome. And the blending is good as well.
Yea the origin of the render is DA. In this case I don't think he knew that the render originated from there and the fault more lies with the person who cut it. As even thou it was found in google images the image location is clearly shown to be from DA. Sorry To tell you this as I really like the sis as it has nice compo, colors and text . But you basically have two options you can just delete the sig or you can try emailing the creator asking for permission to use it. It may help if you provide the sig as an example of what you have done. I've emailed DA artists b4 and gotten permission, usually with promises to link people back to the work in question. I've done this by turning the sig basically into a clickable link that takes the person to their profile/artwork. I can show you how to do this if you end up getting permission. Gl ^_^
