Realistic Whimsical Children's Book Illustrations

I'm seeking a talented illustrator for a children's book aimed at 8-12 year-olds. The book requires more than 20 illustrations.

The style should be a blend of realistic and whimsical, capturing the imagination of this age group while also resembling familiarity.

Ideal skills and experience:
- Proven portfolio in children's book illustration
- Strong ability in realistic and whimsical art styles
- Experience with 8-12 year old audience
- Creativity in visual storytelling
- Ability to meet deadlines and communicate effectively

Please provide samples of similar work.