Hmm, I dunno, I pretty much had the one basic idea from the get-go. But I definitely added to it and emphasised things along the way. I mean, just because you've got your idea from the start (or not, it really doesn't matter when you get your initial idea) doesn't mean that you're going to follow it through. This is pretty much what everyone else's said, but it needs emphasising - all the research/reading/writing/thinking you do throughout the year will affect your finished mw. You may not think it, but your idea will evolve, you'll gain a new perspective on it, and you'll think up new ideas to add to it. So don't worry too much now if you've gotten nowhere in the ides department, as log as you're open to changing your idea once you have it... which is pretty much what everyone else has already said. I'm gonna stop typing now.