How can you build a film like Iron Sky?

Iron Sky is a Finnish action-comedy movie that became famous in 2012 for its innovative business model, based on crowdfunding and crowdsourcing. The video tells how it worked for Iron Sky, and how it could possibly work for a non professional film maker. Is it so easy to produce a good looking film? Things can get a bit complicated and the risk of releasing a cheesy film might be high. But that's kind of the point...right?