Children Books Illustrations

I've made research on the internet and picked few books for children I especially liked. Some of them drag my attention because of colours of the illustrations, others with page layouts but most of all I looked at the technique those illustration are made in.
As I said in the previous post I'm looking for the idea of creating the image with paint and brush first of all, then - worked out in the computer. I really want to try this technique and that's why I looked on illustrations which look or just make an impression like made in the traditional way - I mean hand made.
Here are some examples of those I liked the best: