After several weeks of quiet aurora-activity combined with cloudyweather, I finally found a place so clear that I couldn't remember the last time I saw the stars that brightly shining. I hope you guys enjoy the view as much as I did
I really like how you've laid out this photo. On a first glance, it looked as if he was actually spray painting the aurora across the sky. This set up made for an intriguing way of viewing the image.
My eyes sort of struggle to find a focal point in this image. While the person makes the image interesting, he also has the potential to make it distracting. The highlights around the edges of his body, coupled with the lack of lighting on his back, draw my attention away from the sky. This would be fine if I had a solid point to look at on his body, but the lack of a focal point makes that challenging and keeps my eyes wandering.
The sky at the top might benefit from a little extra contrast. The problem with night photography is that dimmer stars can end up looking like dust or dents in the lens. You might try overlaying a digital filter and reducing its opacity to see if it enriches this section of the photograph. This may just be my personal preference, however.
These are just some minor things I noticed, overall it's an outstanding photo.