>>3028974>but i couldn't get it to blend with the bottom half of the picture, it looked really unnatural just use a big soft brush.
it's a bit more work than he said, but here's like 2 minutes in ps. desaturate the greens/cyan in the aurora and ground then add a new layer in color blending mode and paste a bunch of the normal sky on it.
i added another adjustment layer for levels to adjust the brighter bits of the aurora