Cover art and illustrations for teen superhero novel

Skygirl: The Divine is a teen superhero novel with a strong female protagonist. I will be self-publishing this novel through Amazon. I am in need of colorful, exciting cover art and cover design, and possibly some black and white illustrations for the interior. Superhero fiction is traditionally associated with a strong visual style, so I am most interested in artists and designers that understand that style and what makes it great. Strong character design is a must and should feature on the cover and illustrations. Attached are two chapters that give you a basic idea of characters, theme, and writing style.