Children's Book Illustrator for STEM Education

I am looking for an experienced children’s book illustrator/designer to help complete and professionally finish an educational children’s book called Tully the Turbine & Friends – What Are Wind Turbines?... (Budget: $1500 - $3000 AUD, Jobs: Adobe Illustrator, Book Design, Caricature & Cartoons, Character Design, Concept Art, Graphic Design, Illustration, Illustrator)