Really nice work! I think you captured a striking and dark energy. The contrast between the dark, skeletal armor and the huge white wings immediately draws the eye. The lighting is especially nice, with a warm, dusty glow behind the character, which makes the armor pop.
It also gives me WoW: Shadowlands vibes—specifically Torghast! I would highly recommend looking at some of the artwork from there, because I think your piece would fit right in with the environment and design.
The only thing I had a question about was the weapon, as it looks like a cross between a sword and a scythe, so I wondered exactly what it was meant to be.
Great stuff overall!