Children's book cover with up to ten pen drawings for inside

I need a cover for my children's story and some pen drawings for inside. I am flexible on style so long as the illustrations capture the essence of the characters - which is a gang of fun-loving, elderly pranksters. To the world at large they are feeble, old dodderers but behind closed doors fun reigns supreme and chaos is never far away.....
If this is something which interests you I'd like to see sample style ideas. I'm looking to work with someone with whom I can build a relationship for possible future books.