For example: Timing. I was trying to launch a summer clothing brand, but due to Amazon Payments delays the Kickstarter page didn't launch until mid-June. This forced me to move back delivery times, and turned a lot of customers away. Choose the right demographic. Certain demographics are more likely to succeed than others *Have a large Facebook or Twitter fan base. When you already have a large following, they'll make it much easier to get coverage and social proof that convinces other customers who are unfamiliar with your brand to buy
For all the HNers out there, what do you think it takes to fund a successful Kickstarter campaign?