So, you have an idea. Or don't you?
This is one of the first questions you must ask in your communication: is my idea clear to me?
Can you explain your big-picture idea to an 8 year-old? or in one sentence?
If not, then you're probably a little confused about your idea.
You should be able to reduce your idea to a simple sentence. You may need to have other points to support your idea, and that's okay. But you should have a good handle on your basic point.
Next up: context.