Crowdfinding isn't the best option for you at the moment. Since it seems this is your first game, just make it! There's nothing stopping you. You need more experience and a LOT more to show than one graphic and a demo (which looks like it took a few hours to make) in order for anyone to even consider giving you money. What do you need the money for, anyway?
Make some games first, release them on game portals or for free. Only after that you may have the experience to begin asking for money.