Children's eBook Illustrations

Hi! I'm creating a series of children's ebooks...will need 4 simple cartoon type illustrations for each one...would like to keep the cost under $50 per book, work with English speaking artist, good communicator with good ideas for future work together on this and other types eBook projects. I would like to have you create some characters for me that would fit into a "Modern Family." What I mean by this: I will need a girl and a boy but will not give them a name. These kids (appearing about 6 years old) will need 1 parent sometimes, and 2 parents sometimes. I'd like these "parents" to not be obviously a man or a woman (sort of non gender) so that this book would be appropriate for a child with 1 parent, 2 parents of opposite sex, or 2 parents of same sex. The kids will be in simple backgrounds like a kitchen or a schoolroom. I would like the girl & boy to have "neutral" hair, probably brown, and I would like the skin color to be "neutral" with a tint so that they fit into any culture or race. The girl will to have a non gender haircut, and the parents will not be discernibly men or women. Attachments give examples. In the future I will need to add a couple of family members like a grandparent or a baby. These ebooks will be relatively short, with approximately 4 illustrations per book. I would also be interested in having a basic cover illustration done with the characters which I could use for multiple ebook covers (titles different on each). The cover illustration should show the "whole head" of the girl and boy. I included samples of a basic style of kids I like, and would like to see samples of your work. I give good directions, am open to suggestions, and like good communicators! Thanks. I look forward to hearing from you! Carole