Nathalia, elf witch knight / hexblade warlock (D&D commission)

Commission description:

"The daughter of an elvish Queen, Nathalia was kidnapped by a powerful elf sorcerer known as the Witch Emperor. The Witch Emperor brainwashed her and trained to become a witch knight, as part of a plot to destroy her family. She was dragged into a web of manipulation, intrigue and mind games that ultimately led to her father's death and a lengthy war that saw the destruction of several nations.

She wears a suit of dark armor and a very thin but long straight sword in her right hand, leaving her left hand free to cast spells.

For the pose I would like her to be looking forward with determination showing in her face, holding her sword in her right hand, and preparing a spell on her left. As if she was sneaking into some unseen enemy she is going to curse and murder.

If you could draw her channeling dark energies on her hand it would be really cool."