What you start out with may have little resemblance to the present form. And this is good because ideas are not written in stone. Ideas were never written in stone. Ideas require revision. The idea is to move through the process with the least frustration.
Frustration is a part of the creative process.
But if it becomes the process, then you've got frustration and not process. Be creative and limit your frustration. Ideas require limiting frustration. What is most meaningful about the internet, the web and the new information mediums of our time is that they more closely reflect our internal creative processes. Ideas are interdependent with the medium.