It is a Shinku wallpaper with northern lights as the background. I'm sort of a novice at northern lights, and this is my first attempt of an extraction using a vector mask (I hope you guys understood that) but I hope you like it!
Oh, and if you are willing to use it for any personal reasons, please feel free to use, but please, PLEASE credit. I do not support plagiarism.
Once again, please credit! I hope you like it!