Kids' Shapes and Colors Book Series

I'm looking for an experienced children's book illustrator and writer to create a 40-50 page book for kids aged 3-5. The book will focus on basic shapes and colors and is the first of a potential series.

Requirements:
- Engaging, age-appropriate content
- Colorful, cartoonish illustrations
- KDP format for digital publishing

Ideal Skills:
- Experience with children's books
- Strong illustration skills, especially in cartoon style
- Familiarity with KDP publishing process

Please provide samples of previous work and a brief outline of your approach.