I've watched your art for years, ever since there was just Doom and Hell at the Suta-Raito Oekaki. But I hardly ever comment, shame on me!
ANYWAY I'd just like to say that this character design seems very good to me! The character drew me in even when I just saw her out of the corner of my eye on the front page. Everything about her is terribly expressive of her personality and very unique. Her design colors and shapes work good together and all add to her personality, creating a very cohesive character design.
Also, I think this character design is very good because it's not cliché at all. We all think we know what a cartoon "Vixen" should look like, but this design takes all those elements and breathes fresh life into them. She is very unique, very expressive, full of personality, and not cliché at all even when exploring a very common character type.
My only criticism, which is very unimportant, would be that the shading makes it look like there is a ball under her head (the highlight under her head near the dark shirt) if you squint.
Anyway, thank you for sharing such awesome work.