Although I'm not a big fan of this advice I'm about giving as it has causes at lot of harm to the community instead of bringing about development as it was intended for. I'm speaking about the initial or exchange crowdfunding technique used by most funds to raise millions of dollars to support their idea and help it get kick started.
One bad observation though, it's quite hard for reasonable project to raise decent amount of funds without any marketing but that of the worthless project without any reasonable ideology gets lots of cash stoned at them. What I'm trying to say is since you're not promising some get rich quick scheme you would hardly numerous patronizers therefore you need to have very confusing reasons why investors have to trust you and engaged on aggressive marketing too.