I took that image of my girlfriend Amelia, during early medieval reenactment festival. Which took place in a real early medieval slavic round stronghold "Gród Grzybowo", she wears 10th century Slavic clothing, consistent with archaeological finds. In the background you can see a gentle slope, which is the remains of the fortified walls.
Photo taken during (You guess) sunset. With only natural light.
I do some croping, coloring, removed few distracting colors from background and made few layers of textures and grain, using luminosity and HUE masking in Affinity Photo V2.
Photo taken with Fuji X-H1 and Fujinon 90mm f/2 lens.