I need an illustrator for my children’s book

I’ve written a children’s book and I’m looking for an artist to illustrate the front page and approximately 10 additional pages that fit into a A5 area space. I am looking for quirky characters and do not require a great deal of intricate background detail. I particularly need a character created being a creature who is mischievous like a goblin.
The main characters are an 8 year old boy, an exasperated mother and father a cat and a few other random characters. I want to keep the details somewhat simple yet colourful. I’ve attached some pictures that will provide an example of the style I’m looking for