I'm building a whole online course on this and have taken a bunch of Clarity calls on the topic. Here are a few "less obvious" tips:

1) Price "below MSRP". Unlike Amazon and Zappos, there is risk involved in crowdfunding purchases. Customers should get a discount for that risk. Backers want the reward. These platforms act more like a store for pre-orders. They're not a charitable donation platform.

2) Make each level more value than the last for not much more money. See AJ Leon's "Life and Times of a Remarkable Misfit" for a great example of this.

3) Your video needs to tell a story and resonate with the backers.

4) You need to have a marketing & press plan long before you launch. Crowdfunding campaigns get funded BEFORE the campaign, not during. It's the pre-work. The platform will bring you about 10% of your overall traffic. You need to bring the rest.

5) Collect emails pre-launch. Use Launchrock or something similar to collect emails in the weeks and months leading up to launch. Put your video up on a landing page or at least a photo & description. It's way better to launch with 500-1000 emails.

More at www.crowdfundinghacks.com or give me a call on Clarity.