@shrek1sbae69 I hope the explanation make sense. Lol, in conclusion. I just put some of The Background image from The Actuall Anime.
And Edited it, until it looks good. And not too rough looking, until it make sense :p
@shrek1sbae69 After that, you could use The Background (from that image above, as refrence).
And overlay it again and again, erase the edges with Soft Eraser Brush. Until it looks good.
And for rest, you could composite it. With color corrections, those anime blooms, etc :p