Many designers don't get their careers "jump started", it takes a lot of their own cash, sleepless nights, hard work and luck. Lots of designers start out by designing a small sample collection and showing it to everyone who will listen. Get appointments with store buyers (don't approach the large stores for a few seasons or until you have your look, quality and production sorted - stick to the smaller boutiques with good reputations), send out press releases with photos attached, get a decent website done - start off with one small order at a time and build on that. If you are as good as you say, within a few seasons, you could have a press agent, a sales rep and a small business going and you'll be able to show that you're worthy of sponsorship.