Sketching for a children’s book

I am looking for an experienced illustrator to create sketches for a children’s book that I am in the process of publishing. The sketching style that I am looking for is whimsical. The book will have fewer than 20 pages, and I would like the sketches to be colored. Ideally, I'm looking for someone with a whimsical and imaginative portfolio that could bring my characters to life.