Realistic Digital Children’s Illustrations

I’m preparing a children’s book and need 10–20 full-page illustrations rendered in a realistic style. Everything will be created digitally, so layered PSD or Procreate files plus ready-to-print high-resolution PNG/JPEGs will be the ideal hand-off... (Budget: $30 - $250 USD, Jobs: Adobe Photoshop, Caricature & Cartoons, Character Design, Digital Art, Illustration, Illustrator, Photoshop, Procreate)