easiest way i find, is to write 1-14 down a piece of paper(or however many days you are going.
Next get a brits guide, or check out the busy day schedule of each park..Start to pencil in what days you would like to do what parks.
next think about parades,shows etc, whether you wwant to park hop to more than one park in a day etc.
Then think if you need any priority seating requests(do you want to have meals with the characters etc??), once you start jotting things down like this you will see a plan evolve!.
If you need any help PM me, i usually put ALOT of plans together for many a dis or dibber!!!
jules