You don't. Ideas are a dime a dozen. If you think you're going to find someone to build an application/product for you for free, you might reconsider your idea

You don't. Ideas are a dime a dozen. If you think you're going to find someone to build an application/product for you for free, you might reconsider your idea because I'd say you already aren't thinking clearly. As zer00eyz said, if you don't have the skills, get them.