Hi, becasouse I'm in this for a while, i mean i work in a theatrical company, I can say it is my job creating this things. First of all, if you want to make a good novel, you must understand the basics of scriptwriting. In my language luckily there are many scources, but these are translated from english, so I will find out the books you need, if you want. Avatar is a great example how to write an effective screenplay, if read a few thing about scriptwriting, you will understand in Idiana Jones, and other films. It's quite simple thing, and it is hard to master it.

For a first catch I give you a good book name:

Linda Seger Creating Unforgettable characters. Henry Holt & Company.

Anyway, I imagened that the Republic is so bureaucratic, that anakin must to take law to his own hands. The Clone Wars I think important, beacouse in there, anakin have a reason to change. Anyway, I work it on a bit, writing in english is bit difficult, if I want to write something to you understand. It's not my motherlanguage. ;) Anyways here's a preferable character type to make Anakin:

http://www.youtube.com/watch?v=TszuTgFx93U

Cheers.