When you create a piece, you are not just creating a “piece of money”. A concept about your art, is also a reflex of who you are. And that's when you create a connection between the client and your piece.
I’m sorry to say that an idea is worth nothing, until you grab it by its tale - or head - and start designing it. You can write it down, you can draw, you can call a friend, you can start working on the connections between your idea and the actual development of that idea.