Realistic YA Sci-Fi Character Art

My YA science-fiction dystopian novel follows an exiled hacker who falls for a blind girl raised to destroy the virtual world he loves. I need a single, polished illustration in a realistic style that could serve either as a fresh cover concept or as attention-grabbing marketing collateral... (Budget: $250 - $750 USD, Jobs: 3D Art, 3D Illustration, Adobe Photoshop, Caricature & Cartoons, Character Design, Concept Design, Digital Art, Graphic Design, Illustration, Illustrator)