As you can see above this is one of those beautiful photos taken in the Northern latitudes where the Aurora Borealis does its incredible fractal flames flares in the sky on a nightly basis.
I'm sure people living there probably get used to it, or not. I've never met anyone who lives there. Anyone reading this who lives in that area of the world, I'd love to hear from you about this phenomena, it's so awesome.
So having the above beautiful flare of lights, I thought I would incorporate that into another image.
I added next a cavern scene to complete the piece, and the shades of green imagery.
In Photoshop it's a matter of layering your images, pulling some up or down, right or left, then maybe adding a green shader layer with some blending to color correct and create the monotone green colors.
Hope this was fun for you.