D&D portrait in the style of a high fantasy oil painting, female demon necromanc

D&D portrait in the style of a high fantasy oil painting, female demon necromancer boasting light purple hair cascading over her light armor, adorned with mysterious runes and emanating a subtle dark aura, her eyes capturing attention with extremely long eyelashes, backlit with a sinister glow from her latest conjuration, vivid colors, golden ratio, dramatic lighting, highly detailed.