I dont know if its helpfull but when i writte i put down the ideas, and when in reaching the ending chapter i start reading from the beggining and adding more details to the story, i describe the things and emotions that are all around my characters. Its like if first you make the skeleton of the story and when you put the last bone you start adding the flesh, the nerves, the blood, etc. That way when you finish the heart of the book can start beating. (creepy example?)
Make sure to read your book several times, you will see that each time you read it you will find a new thing to add, like a joke, a clue to the reader so he can try to guess whats going to happend and many more things.
You can also make a copie of your book and give it to a friend or a family member so he can read it and give you another point of view of it and were it gets too complicated.
I think the rewritting its a long proces but also can be fun.
Happy writting!
Hari
[This message has been edited by Hari (edited January 29, 2009).]