Experiment! Not everything is done in Photoshop.
Photos like this are pretty easy. The overall scene was lit by a rising full moon, which lasted just a few minutes due to cloud cover. A headlamp lit the tent. Our "campfire" was a candle surrounded by aluminum foil. I used a tripod and a 7 second exposure. Photoshop was only used to lighten certain areas.
John and Beth backpacking at 12,000+ feet in the Colorado Rockies.