Mélusine (Ruler) from Fate/Grand Order.

For general character.

ruler_melussine_cinn, long hair, 1girl, white hair, small breasts, bangs, long sleeves, navel, brown eyes, forked eyebrows, revealing clothes, wings, tail

Optional you can use

mask,tail,

It would be great if you published any of your creations directly in the post.

So have fun :).