Desaturate and enhance, add some perspective lines.
step 2 of 4
Add heroine, textures, and some quest accessories for scale. Paint light with color and soft light layers, paint and burn shadows. What is in that archway?
step 3 of 4
A horned demon, looks like. Burn and dodge to enhance, color/soft light paint some eerie glows.
step 4 of 4
Dodge highlights, burn shadows, fog over edges with gradients.
Dodge/soft light layer of stone cracks over dark pillar makes an oil slick sheen.
Patch and rotate stone textures, burn temple wall layer over model, soft light layer, c/p/erase/burn stones.
Turn stairs to match landing edge.
Paint fire with orange color, yellow light; eerie glows with cyan/cyan.
Tweak levels to enhance mystical glow. Final Battle.