Excercise from "Writer Unboxed"

The shape of a story: this link contains the detailed instructions!

1. Once upon a time . . . there was a forrest on the edge of Everroan  in which dwelled many families of brown burrow mice. One of these families was smaller than the rest. It consisted only of a father mouse and a baby mouse--the young mother mouse having made off years before in a fit of youthful exuberance.

2. Every day . . . he would leave his small mousling with a mousesitter toad or his own aged mother so he could go to work and have a normalish life in the wood.

3. Until this . . . one day in early spring when he met and fell in love with a young, strange but gentle hearted wood-troll.