Book Diagrams

I need someone to put together some diagrams for my book. the book is a self help book for couples in relationship so has something of a serious nature to it but not so much so that the diagrams cannot have a playful component to them. the diagrams are a means for demonstrating some theory so consist of triangles or some kind of table of information. in addition i thought they might be nicer if there were some simple characters attached to them, characters that are more like caricatures of real people but without being childish or babyish. i also need some a picture of a fish on a hook and some fishing kissing as well as a ladder with rungs with words on each rung, an iceberg with some words on it and a traffic light with some words on it. the diagrams and the characters all need to be in black and white. so what i want is someone to put all this together for me. before i accept a bid i would like to see your style so if this sounds like you i would like to see something of what you have already produced to get a feel for your style and to check that it matches what i have in mind.