Your plans, schemes, draft, proposals, notes, to-do list whatever we choose to call them might look brilliant, solid and wonderful on paper. Until and when you actually start, until and when you begin, you'd never know how great it will be.
Most of us kill our dreams in the planning phase, we spend countless hours, days, months, even years to perfect and come up with the best plan. We procrastinate and dream of the best draft that looks foolproof and won't fail. Well, Newsflash! Even the best drafts fails sometimes..
Your best bet is to start doing. When you do, you'd learn more than you could possibly learn from any paper, plan, draft or proposal. Why do you think a lot of emphasis is placed on experience?