Ask HN: Review my startup, conceptcupboard.com

Hi everyone, I was looking to get some feedback on my startup Concept Cupboard. We're an online marketplace connecting businesses with student and graduate freelance creatives. We've had some good clients and feedback to date but I need to figure out how to reach new users on zero budget. We're active on social media and blog but aren't finding the right fit yet. Any suggestions on the core proposition / home page / marketing front?