How does the design relate to empty space, specifically? If you're just looking to make a minimalist deck, you'll have a lot of competition to go up against - it's been a popular design theme for a couple of years now, though it seems to be waning by now.
It's not hard to find an artist to help you with your design - if you're willing to pay them for their time and effort. Getting a designer willing to work on spec while you try launching a Kickstarter is far more difficult. It's a catch-22 of playing card design for the non-designer - you need cash to get the art done, but you can't raise any cash without art to show your backers unless it comes from your own pocket...